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CVE-2024-26675 (GCVE-0-2024-26675)

Vulnerability from cvelistv5 – Published: 2024-04-02 07:01 – Updated: 2026-05-11 20:02
VLAI
Title
ppp_async: limit MRU to 64K
Summary
In the Linux kernel, the following vulnerability has been resolved: ppp_async: limit MRU to 64K syzbot triggered a warning [1] in __alloc_pages(): WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp) Willem fixed a similar issue in commit c0a2a1b0d631 ("ppp: limit MRU to 64K") Adopt the same sanity check for ppp_async_ioctl(PPPIOCSMRU) [1]: WARNING: CPU: 1 PID: 11 at mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 Modules linked in: CPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc2-syzkaller-g41bccc98fb79 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: events_unbound flush_to_ldisc pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537 sp : ffff800093967580 x29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000 x26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000939675c0 x23: 0000000000000000 x22: 0000000000060820 x21: 1ffff0001272ceb8 x20: ffff8000939675e0 x19: 0000000000000010 x18: ffff800093967120 x17: ffff800083bded5c x16: ffff80008ac97500 x15: 0000000000000005 x14: 1ffff0001272cebc x13: 0000000000000000 x12: 0000000000000000 x11: ffff70001272cec1 x10: 1ffff0001272cec0 x9 : 0000000000000001 x8 : ffff800091c91000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 00000000ffffffff x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff8000939675e0 Call trace: __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] __kmalloc_large_node+0xbc/0x1fc mm/slub.c:3926 __do_kmalloc_node mm/slub.c:3969 [inline] __kmalloc_node_track_caller+0x418/0x620 mm/slub.c:4001 kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:590 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651 __netdev_alloc_skb+0xb8/0x3e8 net/core/skbuff.c:715 netdev_alloc_skb include/linux/skbuff.h:3235 [inline] dev_alloc_skb include/linux/skbuff.h:3248 [inline] ppp_async_input drivers/net/ppp/ppp_async.c:863 [inline] ppp_asynctty_receive+0x588/0x186c drivers/net/ppp/ppp_async.c:341 tty_ldisc_receive_buf+0x12c/0x15c drivers/tty/tty_buffer.c:390 tty_port_default_receive_buf+0x74/0xac drivers/tty/tty_port.c:37 receive_buf drivers/tty/tty_buffer.c:444 [inline] flush_to_ldisc+0x284/0x6e4 drivers/tty/tty_buffer.c:494 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:53 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4fdb14ba89faff6e6969a4dffdc8e54235d6e5ed (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 56fae81633ccee307cfcb032f706bf1863a56982 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b06e067e93fa4b98acfd3a9f38a398ab91bbc58b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 58fbe665b097bf7b3144da7e7b91fb27aa8d0ae3 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4e2c4846b2507f6dfc9bea72b7567c2693a82a16 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7e5ef49670766c9742ffcd9cead7cdb018268719 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 210d938f963dddc543b07e66a79b7d8d4bd00bd8 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cb88cb53badb8aeb3955ad6ce80b07b598e310b8 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.19.307 , ≤ 4.19.* (semver)
Unaffected: 5.4.269 , ≤ 5.4.* (semver)
Unaffected: 5.10.210 , ≤ 5.10.* (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.78 , ≤ 6.1.* (semver)
Unaffected: 6.6.17 , ≤ 6.6.* (semver)
Unaffected: 6.7.5 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nppp_async: limit MRU to 64K\n\nsyzbot triggered a warning [1] in __alloc_pages():\n\nWARN_ON_ONCE_GFP(order \u003e MAX_PAGE_ORDER, gfp)\n\nWillem fixed a similar issue in commit c0a2a1b0d631 (\"ppp: limit MRU to 64K\")\n\nAdopt the same sanity check for ppp_async_ioctl(PPPIOCSMRU)\n\n[1]:\n\n WARNING: CPU: 1 PID: 11 at mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\nModules linked in:\nCPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc2-syzkaller-g41bccc98fb79 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nWorkqueue: events_unbound flush_to_ldisc\npstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\n lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537\nsp : ffff800093967580\nx29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000\nx26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000939675c0\nx23: 0000000000000000 x22: 0000000000060820 x21: 1ffff0001272ceb8\nx20: ffff8000939675e0 x19: 0000000000000010 x18: ffff800093967120\nx17: ffff800083bded5c x16: ffff80008ac97500 x15: 0000000000000005\nx14: 1ffff0001272cebc x13: 0000000000000000 x12: 0000000000000000\nx11: ffff70001272cec1 x10: 1ffff0001272cec0 x9 : 0000000000000001\nx8 : ffff800091c91000 x7 : 0000000000000000 x6 : 000000000000003f\nx5 : 00000000ffffffff x4 : 0000000000000000 x3 : 0000000000000020\nx2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff8000939675e0\nCall trace:\n  __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\n  __alloc_pages_node include/linux/gfp.h:238 [inline]\n  alloc_pages_node include/linux/gfp.h:261 [inline]\n  __kmalloc_large_node+0xbc/0x1fc mm/slub.c:3926\n  __do_kmalloc_node mm/slub.c:3969 [inline]\n  __kmalloc_node_track_caller+0x418/0x620 mm/slub.c:4001\n  kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:590\n  __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651\n  __netdev_alloc_skb+0xb8/0x3e8 net/core/skbuff.c:715\n  netdev_alloc_skb include/linux/skbuff.h:3235 [inline]\n  dev_alloc_skb include/linux/skbuff.h:3248 [inline]\n  ppp_async_input drivers/net/ppp/ppp_async.c:863 [inline]\n  ppp_asynctty_receive+0x588/0x186c drivers/net/ppp/ppp_async.c:341\n  tty_ldisc_receive_buf+0x12c/0x15c drivers/tty/tty_buffer.c:390\n  tty_port_default_receive_buf+0x74/0xac drivers/tty/tty_port.c:37\n  receive_buf drivers/tty/tty_buffer.c:444 [inline]\n  flush_to_ldisc+0x284/0x6e4 drivers/tty/tty_buffer.c:494\n  process_one_work+0x694/0x1204 kernel/workqueue.c:2633\n  process_scheduled_works kernel/workqueue.c:2706 [inline]\n  worker_thread+0x938/0xef4 kernel/workqueue.c:2787\n  kthread+0x288/0x310 kernel/kthread.c:388\n  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860"
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ppp_async: limitar MRU a 64K syzbot activ\u00f3 una advertencia [1] en __alloc_pages(): WARN_ON_ONCE_GFP(order \u0026gt; MAX_PAGE_ORDER, gfp) Willem solucion\u00f3 un problema similar en el commit c0a2a1b0d631 (\"ppp: limite MRU a 64K\") Adopte la misma verificaci\u00f3n de cordura para ppp_async_ioctl(PPPIOCSMRU) [1]: ADVERTENCIA: CPU: 1 PID: 11 en mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 M\u00f3dulos vinculados en: CPU: 1 PID: 11 Comm: kworker/u4:0 No contaminado 6.8.0-rc2-syzkaller-g41bccc98fb79 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 17/11/2023 Cola de trabajo: events_unbound flux_to_ldisc pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537 sp: ffff800093967580 x29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000 x26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000 939675c0 x23: 0000000000000000 x22: 0000000000060820 x21: 1ffff0001272ceb8 x20: ffff8000939675e0 x19: 0000000000000010 x18: ffff8000939671 20 x17: ffff800083bded5c x16: ffff80008ac97500 x15: 00000000000000005 x14: 1ffff0001272cebc x13: 0000000000000000 x12: 0000000000000000 x11: ffff70001272cec1 x10: 1ffff0001272cec0 x9: 0000000000000001 x8: ffff800091c 91000 x7: 0000000000000000 x6: 000000000000003f x5: 00000000ffffffff x4: 0000000000000000 x3: 00000000000000020 x2: 0000000000000008 x1: 0000000000000000 x0: ffff8000939675e0 Rastreo de llamadas: __alloc_pages+0x308/ 0x698 mm/page_alloc.c:4543 __alloc_pages_node include/linux/gfp.h:238 [en l\u00ednea] alloc_pages_node include/linux/gfp.h:261 [en l\u00ednea] __kmalloc_large_node+0xbc/0x1fc mm/slub.c:3926 __do_kmalloc_node mm/slub .c:3969 [en l\u00ednea] __kmalloc_node_track_caller+0x418/0x620 mm/slub.c:4001 kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:590 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651 __netdev_alloc_skb+0x b8 /0x3e8 net/core/skbuff.c:715 netdev_alloc_skb include/linux/skbuff.h:3235 [en l\u00ednea] dev_alloc_skb include/linux/skbuff.h:3248 [en l\u00ednea] ppp_async_input drivers/net/ppp/ppp_async.c:863 [ en l\u00ednea] ppp_asynctty_receive+0x588/0x186c controladores/net/ppp/ppp_async.c:341 tty_ldisc_receive_buf+0x12c/0x15c controladores/tty/tty_buffer.c:390 tty_port_default_receive_buf+0x74/0xac controladores/tty/tty_port.c:37 recibir_buf controladores /tty /tty_buffer.c:444 [en l\u00ednea] Flush_to_ldisc+0x284/0x6e4 controladores/tty/tty_buffer.c:494 Process_one_work+0x694/0x1204 kernel/workqueue.c:2633 Process_scheduled_works kernel/workqueue.c:2706 [en l\u00ednea] trabajador_thread+0x938/ 0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860"
        }
      ],
      "id": "CVE-2024-26675",
      "lastModified": "2024-11-21T09:02:49.250",
      "published": "2024-04-02T07:15:44.100",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/210d938f963dddc543b07e66a79b7d8d4bd00bd8"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/4e2c4846b2507f6dfc9bea72b7567c2693a82a16"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/4fdb14ba89faff6e6969a4dffdc8e54235d6e5ed"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/56fae81633ccee307cfcb032f706bf1863a56982"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/58fbe665b097bf7b3144da7e7b91fb27aa8d0ae3"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/7e5ef49670766c9742ffcd9cead7cdb018268719"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/b06e067e93fa4b98acfd3a9f38a398ab91bbc58b"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/cb88cb53badb8aeb3955ad6ce80b07b598e310b8"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/210d938f963dddc543b07e66a79b7d8d4bd00bd8"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/4e2c4846b2507f6dfc9bea72b7567c2693a82a16"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/4fdb14ba89faff6e6969a4dffdc8e54235d6e5ed"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/56fae81633ccee307cfcb032f706bf1863a56982"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/58fbe665b097bf7b3144da7e7b91fb27aa8d0ae3"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/7e5ef49670766c9742ffcd9cead7cdb018268719"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/b06e067e93fa4b98acfd3a9f38a398ab91bbc58b"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/cb88cb53badb8aeb3955ad6ce80b07b598e310b8"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/ppp/ppp_async.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "4fdb14ba89faff6e6969a4dffdc8e54235d6e5ed",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "56fae81633ccee307cfcb032f706bf1863a56982",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b06e067e93fa4b98acfd3a9f38a398ab91bbc58b",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "58fbe665b097bf7b3144da7e7b91fb27aa8d0ae3",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4e2c4846b2507f6dfc9bea72b7567c2693a82a16",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7e5ef49670766c9742ffcd9cead7cdb018268719",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "210d938f963dddc543b07e66a79b7d8d4bd00bd8",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "cb88cb53badb8aeb3955ad6ce80b07b598e310b8",
                    "status": "affected",
                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/ppp/ppp_async.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.6.12"
                  },
                  {
                    "lessThan": "2.6.12",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.307",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.269",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.210",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.149",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.78",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.17",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.7.*",
                    "status": "unaffected",
                    "version": "6.7.5",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.8",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9F7D87E5-6751-4F81-9988-9AD4C1201206",
                    "versionEndExcluding": "4.19.307",
                    "versionStartIncluding": "2.6.12",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "319545F3-D56C-4751-BEBF-0505478BBAE8",
                    "versionEndExcluding": "5.4.269",
                    "versionStartIncluding": "4.20",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F5CB4CA6-A9A0-4AFD-9102-8CF94D708170",
                    "versionEndExcluding": "5.10.210",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0D0465BB-4053-4E15-9137-6696EBAE90FD",
                    "versionEndExcluding": "5.15.149",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "26190115-BC0C-4106-9408-E7928FE5DA62",
                    "versionEndExcluding": "6.1.78",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "73F8C6ED-5A0B-4B25-8FA9-AF916A9C8F0B",
                    "versionEndExcluding": "6.6.17",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "01925741-2C95-47C1-A7EA-3DC2BB0012D3",
                    "versionEndExcluding": "6.7.5",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "B9F4EA73-0894-400F-A490-3A397AB7A517",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "056BD938-0A27-4569-B391-30578B309EE3",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "F02056A5-B362-4370-9FF8-6F0BD384D520",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nppp_async: limit MRU to 64K\n\nsyzbot triggered a warning [1] in __alloc_pages():\n\nWARN_ON_ONCE_GFP(order \u003e MAX_PAGE_ORDER, gfp)\n\nWillem fixed a similar issue in commit c0a2a1b0d631 (\"ppp: limit MRU to 64K\")\n\nAdopt the same sanity check for ppp_async_ioctl(PPPIOCSMRU)\n\n[1]:\n\n WARNING: CPU: 1 PID: 11 at mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\nModules linked in:\nCPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc2-syzkaller-g41bccc98fb79 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nWorkqueue: events_unbound flush_to_ldisc\npstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\n lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537\nsp : ffff800093967580\nx29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000\nx26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000939675c0\nx23: 0000000000000000 x22: 0000000000060820 x21: 1ffff0001272ceb8\nx20: ffff8000939675e0 x19: 0000000000000010 x18: ffff800093967120\nx17: ffff800083bded5c x16: ffff80008ac97500 x15: 0000000000000005\nx14: 1ffff0001272cebc x13: 0000000000000000 x12: 0000000000000000\nx11: ffff70001272cec1 x10: 1ffff0001272cec0 x9 : 0000000000000001\nx8 : ffff800091c91000 x7 : 0000000000000000 x6 : 000000000000003f\nx5 : 00000000ffffffff x4 : 0000000000000000 x3 : 0000000000000020\nx2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff8000939675e0\nCall trace:\n  __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\n  __alloc_pages_node include/linux/gfp.h:238 [inline]\n  alloc_pages_node include/linux/gfp.h:261 [inline]\n  __kmalloc_large_node+0xbc/0x1fc mm/slub.c:3926\n  __do_kmalloc_node mm/slub.c:3969 [inline]\n  __kmalloc_node_track_caller+0x418/0x620 mm/slub.c:4001\n  kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:590\n  __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651\n  __netdev_alloc_skb+0xb8/0x3e8 net/core/skbuff.c:715\n  netdev_alloc_skb include/linux/skbuff.h:3235 [inline]\n  dev_alloc_skb include/linux/skbuff.h:3248 [inline]\n  ppp_async_input drivers/net/ppp/ppp_async.c:863 [inline]\n  ppp_asynctty_receive+0x588/0x186c drivers/net/ppp/ppp_async.c:341\n  tty_ldisc_receive_buf+0x12c/0x15c drivers/tty/tty_buffer.c:390\n  tty_port_default_receive_buf+0x74/0xac drivers/tty/tty_port.c:37\n  receive_buf drivers/tty/tty_buffer.c:444 [inline]\n  flush_to_ldisc+0x284/0x6e4 drivers/tty/tty_buffer.c:494\n  process_one_work+0x694/0x1204 kernel/workqueue.c:2633\n  process_scheduled_works kernel/workqueue.c:2706 [inline]\n  worker_thread+0x938/0xef4 kernel/workqueue.c:2787\n  kthread+0x288/0x310 kernel/kthread.c:388\n  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ppp_async: limitar MRU a 64K syzbot activ\u00f3 una advertencia [1] en __alloc_pages(): WARN_ON_ONCE_GFP(order \u0026gt; MAX_PAGE_ORDER, gfp) Willem solucion\u00f3 un problema similar en el commit c0a2a1b0d631 (\"ppp: limite MRU a 64K\") Adopte la misma verificaci\u00f3n de cordura para ppp_async_ioctl(PPPIOCSMRU) [1]: ADVERTENCIA: CPU: 1 PID: 11 en mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 M\u00f3dulos vinculados en: CPU: 1 PID: 11 Comm: kworker/u4:0 No contaminado 6.8.0-rc2-syzkaller-g41bccc98fb79 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 17/11/2023 Cola de trabajo: events_unbound flux_to_ldisc pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543 lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537 sp: ffff800093967580 x29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000 x26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000 939675c0 x23: 0000000000000000 x22: 0000000000060820 x21: 1ffff0001272ceb8 x20: ffff8000939675e0 x19: 0000000000000010 x18: ffff8000939671 20 x17: ffff800083bded5c x16: ffff80008ac97500 x15: 00000000000000005 x14: 1ffff0001272cebc x13: 0000000000000000 x12: 0000000000000000 x11: ffff70001272cec1 x10: 1ffff0001272cec0 x9: 0000000000000001 x8: ffff800091c 91000 x7: 0000000000000000 x6: 000000000000003f x5: 00000000ffffffff x4: 0000000000000000 x3: 00000000000000020 x2: 0000000000000008 x1: 0000000000000000 x0: ffff8000939675e0 Rastreo de llamadas: __alloc_pages+0x308/ 0x698 mm/page_alloc.c:4543 __alloc_pages_node include/linux/gfp.h:238 [en l\u00ednea] alloc_pages_node include/linux/gfp.h:261 [en l\u00ednea] __kmalloc_large_node+0xbc/0x1fc mm/slub.c:3926 __do_kmalloc_node mm/slub .c:3969 [en l\u00ednea] __kmalloc_node_track_caller+0x418/0x620 mm/slub.c:4001 kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:590 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651 __netdev_alloc_skb+0x b8 /0x3e8 net/core/skbuff.c:715 netdev_alloc_skb include/linux/skbuff.h:3235 [en l\u00ednea] dev_alloc_skb include/linux/skbuff.h:3248 [en l\u00ednea] ppp_async_input drivers/net/ppp/ppp_async.c:863 [ en l\u00ednea] ppp_asynctty_receive+0x588/0x186c controladores/net/ppp/ppp_async.c:341 tty_ldisc_receive_buf+0x12c/0x15c controladores/tty/tty_buffer.c:390 tty_port_default_receive_buf+0x74/0xac controladores/tty/tty_port.c:37 recibir_buf controladores /tty /tty_buffer.c:444 [en l\u00ednea] Flush_to_ldisc+0x284/0x6e4 controladores/tty/tty_buffer.c:494 Process_one_work+0x694/0x1204 kernel/workqueue.c:2633 Process_scheduled_works kernel/workqueue.c:2706 [en l\u00ednea] trabajador_thread+0x938/ 0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860"
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            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nppp_async: limit MRU to 64K\n\nsyzbot triggered a warning [1] in __alloc_pages():\n\nWARN_ON_ONCE_GFP(order \u003e MAX_PAGE_ORDER, gfp)\n\nWillem fixed a similar issue in commit c0a2a1b0d631 (\"ppp: limit MRU to 64K\")\n\nAdopt the same sanity check for ppp_async_ioctl(PPPIOCSMRU)\n\n[1]:\n\n WARNING: CPU: 1 PID: 11 at mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\nModules linked in:\nCPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc2-syzkaller-g41bccc98fb79 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nWorkqueue: events_unbound flush_to_ldisc\npstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\n lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537\nsp : ffff800093967580\nx29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000\nx26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000939675c0\nx23: 0000000000000000 x22: 0000000000060820 x21: 1ffff0001272ceb8\nx20: ffff8000939675e0 x19: 0000000000000010 x18: ffff800093967120\nx17: ffff800083bded5c x16: ffff80008ac97500 x15: 0000000000000005\nx14: 1ffff0001272cebc x13: 0000000000000000 x12: 0000000000000000\nx11: ffff70001272cec1 x10: 1ffff0001272cec0 x9 : 0000000000000001\nx8 : ffff800091c91000 x7 : 0000000000000000 x6 : 000000000000003f\nx5 : 00000000ffffffff x4 : 0000000000000000 x3 : 0000000000000020\nx2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff8000939675e0\nCall trace:\n  __alloc_pages+0x308/0x698 mm/page_alloc.c:4543\n  __alloc_pages_node include/linux/gfp.h:238 [inline]\n  alloc_pages_node include/linux/gfp.h:261 [inline]\n  __kmalloc_large_node+0xbc/0x1fc mm/slub.c:3926\n  __do_kmalloc_node mm/slub.c:3969 [inline]\n  __kmalloc_node_track_caller+0x418/0x620 mm/slub.c:4001\n  kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:590\n  __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651\n  __netdev_alloc_skb+0xb8/0x3e8 net/core/skbuff.c:715\n  netdev_alloc_skb include/linux/skbuff.h:3235 [inline]\n  dev_alloc_skb include/linux/skbuff.h:3248 [inline]\n  ppp_async_input drivers/net/ppp/ppp_async.c:863 [inline]\n  ppp_asynctty_receive+0x588/0x186c drivers/net/ppp/ppp_async.c:341\n  tty_ldisc_receive_buf+0x12c/0x15c drivers/tty/tty_buffer.c:390\n  tty_port_default_receive_buf+0x74/0xac drivers/tty/tty_port.c:37\n  receive_buf drivers/tty/tty_buffer.c:444 [inline]\n  flush_to_ldisc+0x284/0x6e4 drivers/tty/tty_buffer.c:494\n  process_one_work+0x694/0x1204 kernel/workqueue.c:2633\n  process_scheduled_works kernel/workqueue.c:2706 [inline]\n  worker_thread+0x938/0xef4 kernel/workqueue.c:2787\n  kthread+0x288/0x310 kernel/kthread.c:388\n  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T20:02:01.178Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/4fdb14ba89faff6e6969a4dffdc8e54235d6e5ed"
            },
            {
              "url": "https://git.kernel.org/stable/c/56fae81633ccee307cfcb032f706bf1863a56982"
            },
            {
              "url": "https://git.kernel.org/stable/c/b06e067e93fa4b98acfd3a9f38a398ab91bbc58b"
            },
            {
              "url": "https://git.kernel.org/stable/c/58fbe665b097bf7b3144da7e7b91fb27aa8d0ae3"
            },
            {
              "url": "https://git.kernel.org/stable/c/4e2c4846b2507f6dfc9bea72b7567c2693a82a16"
            },
            {
              "url": "https://git.kernel.org/stable/c/7e5ef49670766c9742ffcd9cead7cdb018268719"
            },
            {
              "url": "https://git.kernel.org/stable/c/210d938f963dddc543b07e66a79b7d8d4bd00bd8"
            },
            {
              "url": "https://git.kernel.org/stable/c/cb88cb53badb8aeb3955ad6ce80b07b598e310b8"
            }
          ],
          "title": "ppp_async: limit MRU to 64K",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26675",
        "datePublished": "2024-04-02T07:01:40.054Z",
        "dateReserved": "2024-02-19T14:20:24.151Z",
        "dateUpdated": "2026-05-11T20:02:01.178Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.