CWE-476

{
  "affected": [],
  "aliases": [
    "CVE-2023-53102"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-02T16:15:29Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: xsk: disable txq irq before flushing hw\n\nice_qp_dis() intends to stop a given queue pair that is a target of xsk\npool attach/detach. One of the steps is to disable interrupts on these\nqueues. It currently is broken in a way that txq irq is turned off\n*after* HW flush which in turn takes no effect.\n\nice_qp_dis():\n-\u003e ice_qvec_dis_irq()\n--\u003e disable rxq irq\n--\u003e flush hw\n-\u003e ice_vsi_stop_tx_ring()\n--\u003edisable txq irq\n\nBelow splat can be triggered by following steps:\n- start xdpsock WITHOUT loading xdp prog\n- run xdp_rxq_info with XDP_TX action on this interface\n- start traffic\n- terminate xdpsock\n\n[  256.312485] BUG: kernel NULL pointer dereference, address: 0000000000000018\n[  256.319560] #PF: supervisor read access in kernel mode\n[  256.324775] #PF: error_code(0x0000) - not-present page\n[  256.329994] PGD 0 P4D 0\n[  256.332574] Oops: 0000 [#1] PREEMPT SMP NOPTI\n[  256.337006] CPU: 3 PID: 32 Comm: ksoftirqd/3 Tainted: G           OE      6.2.0-rc5+ #51\n[  256.345218] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019\n[  256.355807] RIP: 0010:ice_clean_rx_irq_zc+0x9c/0x7d0 [ice]\n[  256.361423] Code: b7 8f 8a 00 00 00 66 39 ca 0f 84 f1 04 00 00 49 8b 47 40 4c 8b 24 d0 41 0f b7 45 04 66 25 ff 3f 66 89 04 24 0f 84 85 02 00 00 \u003c49\u003e 8b 44 24 18 0f b7 14 24 48 05 00 01 00 00 49 89 04 24 49 89 44\n[  256.380463] RSP: 0018:ffffc900088bfd20 EFLAGS: 00010206\n[  256.385765] RAX: 000000000000003c RBX: 0000000000000035 RCX: 000000000000067f\n[  256.393012] RDX: 0000000000000775 RSI: 0000000000000000 RDI: ffff8881deb3ac80\n[  256.400256] RBP: 000000000000003c R08: ffff889847982710 R09: 0000000000010000\n[  256.407500] R10: ffffffff82c060c0 R11: 0000000000000004 R12: 0000000000000000\n[  256.414746] R13: ffff88811165eea0 R14: ffffc9000d255000 R15: ffff888119b37600\n[  256.421990] FS:  0000000000000000(0000) GS:ffff8897e0cc0000(0000) knlGS:0000000000000000\n[  256.430207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  256.436036] CR2: 0000000000000018 CR3: 0000000005c0a006 CR4: 00000000007706e0\n[  256.443283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  256.450527] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[  256.457770] PKRU: 55555554\n[  256.460529] Call Trace:\n[  256.463015]  \u003cTASK\u003e\n[  256.465157]  ? ice_xmit_zc+0x6e/0x150 [ice]\n[  256.469437]  ice_napi_poll+0x46d/0x680 [ice]\n[  256.473815]  ? _raw_spin_unlock_irqrestore+0x1b/0x40\n[  256.478863]  __napi_poll+0x29/0x160\n[  256.482409]  net_rx_action+0x136/0x260\n[  256.486222]  __do_softirq+0xe8/0x2e5\n[  256.489853]  ? smpboot_thread_fn+0x2c/0x270\n[  256.494108]  run_ksoftirqd+0x2a/0x50\n[  256.497747]  smpboot_thread_fn+0x1c1/0x270\n[  256.501907]  ? __pfx_smpboot_thread_fn+0x10/0x10\n[  256.506594]  kthread+0xea/0x120\n[  256.509785]  ? __pfx_kthread+0x10/0x10\n[  256.513597]  ret_from_fork+0x29/0x50\n[  256.517238]  \u003c/TASK\u003e\n\nIn fact, irqs were not disabled and napi managed to be scheduled and run\nwhile xsk_pool pointer was still valid, but SW ring of xdp_buff pointers\nwas already freed.\n\nTo fix this, call ice_qvec_dis_irq() after ice_vsi_stop_tx_ring(). Also\nwhile at it, remove redundant ice_clean_rx_ring() call - this is handled\nin ice_qp_clean_rings().",
  "id": "GHSA-7924-4fvj-rf9c",
  "modified": "2025-11-10T18:30:29Z",
  "published": "2025-05-02T18:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53102"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/243cde8de10894d7812c8a6b62653bf04d8f9700"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ecc6e44959382f95c9d427cd8da85121a9cecda"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b830c9642386867863ac64295185f896ff2928ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b89a453c6918e0f346fb0562e8c7812b94d28c73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cccba1ff0798a27f7b8d0c06762ef977400a2afb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2020-16307"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-08-13T03:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A null pointer dereference vulnerability in devices/vector/gdevtxtw.c and psi/zbfont.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted postscript file. This is fixed in v9.51.",
  "id": "GHSA-792h-j2jm-mf8x",
  "modified": "2022-06-30T00:00:30Z",
  "published": "2022-05-24T17:25:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-16307"
    },
    {
      "type": "WEB",
      "url": "https://bugs.ghostscript.com/show_bug.cgi?id=701822"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202008-20"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4469-1"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4748"
    },
    {
      "type": "WEB",
      "url": "http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=407c98a38c3a6ac1681144ed45cc2f4fc374c91f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2017-11750"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-07-30T17:29:00Z",
    "severity": "MODERATE"
  },
  "details": "The ReadOneJNGImage function in coders/png.c in ImageMagick 6.9.9-4 and 7.0.6-4 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.",
  "id": "GHSA-793p-h652-2qv7",
  "modified": "2022-05-17T02:20:37Z",
  "published": "2022-05-17T02:20:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-11750"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ImageMagick/ImageMagick/issues/632"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "libosdp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-52296"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-08T17:33:46Z",
    "nvd_published_at": "2024-11-12T16:15:26Z",
    "severity": "MODERATE"
  },
  "details": "### Issue:\nAt ospd_common.c, on the osdp_reply_name function, any reply id between REPLY_ACK and REPLY_XRD is valid, but names array do not declare all of the range. On a case of an undefined reply id within the range, name will be null (`name = names[reply_id - REPLY_ACK];`). Null name will casue a crash on next line: `if (name[0] == \u0027\\0\u0027)` as null[0] is invalid.\n\n### Attack:\nAs this logic is not limited to a secure connection, attacker may trigger this vulnerability without any prior knowledge.\n\n### Impact\nDenial of Service\n\n### Patch\nThe issue has been patched in 24409e98a260176765956ec766a04cb35984fab1\n",
  "id": "GHSA-7945-5mcv-f2pp",
  "modified": "2024-11-12T21:32:15Z",
  "published": "2024-03-08T17:33:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/goToMain/libosdp/security/advisories/GHSA-7945-5mcv-f2pp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-52296"
    },
    {
      "type": "WEB",
      "url": "https://github.com/goToMain/libosdp/commit/24409e98a260176765956ec766a04cb35984fab1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/goToMain/libosdp"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LibOSDP vulnerable to a null pointer deref in osdp_reply_name"
}

{
  "affected": [],
  "aliases": [
    "CVE-2023-53503"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: allow ext4_get_group_info() to fail\n\nPreviously, ext4_get_group_info() would treat an invalid group number\nas BUG(), since in theory it should never happen.  However, if a\nmalicious attaker (or fuzzer) modifies the superblock via the block\ndevice while it is the file system is mounted, it is possible for\ns_first_data_block to get set to a very large number.  In that case,\nwhen calculating the block group of some block number (such as the\nstarting block of a preallocation region), could result in an\nunderflow and very large block group number.  Then the BUG_ON check in\next4_get_group_info() would fire, resutling in a denial of service\nattack that can be triggered by root or someone with write access to\nthe block device.\n\nFor a quality of implementation perspective, it\u0027s best that even if\nthe system administrator does something that they shouldn\u0027t, that it\nwill not trigger a BUG.  So instead of BUG\u0027ing, ext4_get_group_info()\nwill call ext4_error and return NULL.  We also add fallback code in\nall of the callers of ext4_get_group_info() that it might NULL.\n\nAlso, since ext4_get_group_info() was already borderline to be an\ninline function, un-inline it.  The results in a next reduction of the\ncompiled text size of ext4 by roughly 2k.",
  "id": "GHSA-794g-3p8m-5jpc",
  "modified": "2026-01-26T21:30:30Z",
  "published": "2025-10-01T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53503"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/100c0ad6c04597fefeaaba2bb1827cc015d95067"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31668cebf45adfb6283e465e641c4f5a21b07afa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5354b2af34064a4579be8bc0e2f15a7b70f14b5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/620a3c28221bb219b81bc0bffd065cc187494302"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4319e457d6e3fb33e443efeaf4634fc36e8a9ed"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2025-38156"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T09:15:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: Fix null-ptr-deref in mt7996_mmio_wed_init()\n\ndevm_ioremap() returns NULL on error. Currently, mt7996_mmio_wed_init()\ndoes not check for this case, which results in a NULL pointer\ndereference.\n\nPrevent null pointer dereference in mt7996_mmio_wed_init()",
  "id": "GHSA-7958-2fhp-vvxf",
  "modified": "2025-11-20T21:30:30Z",
  "published": "2025-07-03T09:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38156"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1072fc0ca1f8d0d5397d24853386876f937b8e63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f30e2b059757d8711a823e4c9c023db62a1d171"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af861c6dea2ef06845a5c7672999a06c06099735"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2009-2768"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2009-08-14T15:16:00Z",
    "severity": "HIGH"
  },
  "details": "The load_flat_shared_library function in fs/binfmt_flat.c in the flat subsystem in the Linux kernel before 2.6.31-rc6 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by executing a shared flat binary, which triggers an access of an \"uninitialized cred pointer.\"",
  "id": "GHSA-79c6-w7w7-4c6q",
  "modified": "2024-02-09T03:32:55Z",
  "published": "2022-05-02T03:38:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2009-2768"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/52909"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3440625d78711bee41a84cf29c3d8c579b522666"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3440625d78711bee41a84cf29c3d8c579b522666"
    },
    {
      "type": "WEB",
      "url": "http://lkml.org/lkml/2009/6/22/91"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/36278"
    },
    {
      "type": "WEB",
      "url": "http://thread.gmane.org/gmane.linux.hardware.blackfin.kernel.devel/1905"
    },
    {
      "type": "WEB",
      "url": "http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5"
    },
    {
      "type": "WEB",
      "url": "http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6"
    },
    {
      "type": "WEB",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:051"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2009/08/13/1"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/36037"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2018-20125"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-12-20T21:29:00Z",
    "severity": "HIGH"
  },
  "details": "hw/rdma/vmw/pvrdma_cmd.c in QEMU allows attackers to cause a denial of service (NULL pointer dereference or excessive memory allocation) in create_cq_ring or create_qp_rings.",
  "id": "GHSA-79gj-8p4x-8fqf",
  "modified": "2022-05-13T01:26:37Z",
  "published": "2022-05-13T01:26:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20125"
    },
    {
      "type": "WEB",
      "url": "https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02823.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3923-1"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2018/12/19/3"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/106298"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2025-21723"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T02:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpi3mr: Fix possible crash when setting up bsg fails\n\nIf bsg_setup_queue() fails, the bsg_queue is assigned a non-NULL value.\nConsequently, in mpi3mr_bsg_exit(), the condition \"if(!mrioc-\u003ebsg_queue)\"\nwill not be satisfied, preventing execution from entering\nbsg_remove_queue(), which could lead to the following crash:\n\nBUG: kernel NULL pointer dereference, address: 000000000000041c\nCall Trace:\n  \u003cTASK\u003e\n  mpi3mr_bsg_exit+0x1f/0x50 [mpi3mr]\n  mpi3mr_remove+0x6f/0x340 [mpi3mr]\n  pci_device_remove+0x3f/0xb0\n  device_release_driver_internal+0x19d/0x220\n  unbind_store+0xa4/0xb0\n  kernfs_fop_write_iter+0x11f/0x200\n  vfs_write+0x1fc/0x3e0\n  ksys_write+0x67/0xe0\n  do_syscall_64+0x38/0x80\n  entry_SYSCALL_64_after_hwframe+0x78/0xe2",
  "id": "GHSA-79h6-f389-cqgv",
  "modified": "2025-10-01T21:31:11Z",
  "published": "2025-02-27T03:34:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21723"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19b248069d1b1424982723a2bf3941ad864d5204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/295006f6e8c17212d3098811166e29627d19e05c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/832b8f95a2832321b8200ae478ed988b25faaef4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2023-52920"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-05T10:15:24Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: support non-r10 register spill/fill to/from stack in precision tracking\n\nUse instruction (jump) history to record instructions that performed\nregister spill/fill to/from stack, regardless if this was done through\nread-only r10 register, or any other register after copying r10 into it\n*and* potentially adjusting offset.\n\nTo make this work reliably, we push extra per-instruction flags into\ninstruction history, encoding stack slot index (spi) and stack frame\nnumber in extra 10 bit flags we take away from prev_idx in instruction\nhistory. We don\u0027t touch idx field for maximum performance, as it\u0027s\nchecked most frequently during backtracking.\n\nThis change removes basically the last remaining practical limitation of\nprecision backtracking logic in BPF verifier. It fixes known\ndeficiencies, but also opens up new opportunities to reduce number of\nverified states, explored in the subsequent patches.\n\nThere are only three differences in selftests\u0027 BPF object files\naccording to veristat, all in the positive direction (less states).\n\nFile                                    Program        Insns (A)  Insns (B)  Insns  (DIFF)  States (A)  States (B)  States (DIFF)\n--------------------------------------  -------------  ---------  ---------  -------------  ----------  ----------  -------------\ntest_cls_redirect_dynptr.bpf.linked3.o  cls_redirect        2987       2864  -123 (-4.12%)         240         231    -9 (-3.75%)\nxdp_synproxy_kern.bpf.linked3.o         syncookie_tc       82848      82661  -187 (-0.23%)        5107        5073   -34 (-0.67%)\nxdp_synproxy_kern.bpf.linked3.o         syncookie_xdp      85116      84964  -152 (-0.18%)        5162        5130   -32 (-0.62%)\n\nNote, I avoided renaming jmp_history to more generic insn_hist to\nminimize number of lines changed and potential merge conflicts between\nbpf and bpf-next trees.\n\nNotice also cur_hist_entry pointer reset to NULL at the beginning of\ninstruction verification loop. This pointer avoids the problem of\nrelying on last jump history entry\u0027s insn_idx to determine whether we\nalready have entry for current instruction or not. It can happen that we\nadded jump history entry because current instruction is_jmp_point(), but\nalso we need to add instruction flags for stack access. In this case, we\ndon\u0027t want to entries, so we need to reuse last added entry, if it is\npresent.\n\nRelying on insn_idx comparison has the same ambiguity problem as the one\nthat was fixed recently in [0], so we avoid that.\n\n  [0] https://patchwork.kernel.org/project/netdevbpf/patch/20231110002638.4168352-3-andrii@kernel.org/",
  "id": "GHSA-79p2-24v8-gp9v",
  "modified": "2026-05-17T18:30:25Z",
  "published": "2024-11-05T12:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52920"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/199f0452873741fa4b8d4d88958e929030b2f92b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41f6f64e6999a837048b1bd13a2f8742964eca6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4da60feca4d35e1a9b03dc0affa3354f9ff45e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecc2aeeaa08a355d84d3ca9c3d2512399a194f29"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}