CVE-2023-53354 (GCVE-0-2023-53354)
Vulnerability from cvelistv5
Published
2025-09-17 14:56
Modified
2025-09-17 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: skbuff: skb_segment, Call zero copy functions before using skbuff frags Commit bf5c25d60861 ("skbuff: in skb_segment, call zerocopy functions once per nskb") added the call to zero copy functions in skb_segment(). The change introduced a bug in skb_segment() because skb_orphan_frags() may possibly change the number of fragments or allocate new fragments altogether leaving nrfrags and frag to point to the old values. This can cause a panic with stacktrace like the one below. [ 193.894380] BUG: kernel NULL pointer dereference, address: 00000000000000bc [ 193.895273] CPU: 13 PID: 18164 Comm: vh-net-17428 Kdump: loaded Tainted: G O 5.15.123+ #26 [ 193.903919] RIP: 0010:skb_segment+0xb0e/0x12f0 [ 194.021892] Call Trace: [ 194.027422] <TASK> [ 194.072861] tcp_gso_segment+0x107/0x540 [ 194.082031] inet_gso_segment+0x15c/0x3d0 [ 194.090783] skb_mac_gso_segment+0x9f/0x110 [ 194.095016] __skb_gso_segment+0xc1/0x190 [ 194.103131] netem_enqueue+0x290/0xb10 [sch_netem] [ 194.107071] dev_qdisc_enqueue+0x16/0x70 [ 194.110884] __dev_queue_xmit+0x63b/0xb30 [ 194.121670] bond_start_xmit+0x159/0x380 [bonding] [ 194.128506] dev_hard_start_xmit+0xc3/0x1e0 [ 194.131787] __dev_queue_xmit+0x8a0/0xb30 [ 194.138225] macvlan_start_xmit+0x4f/0x100 [macvlan] [ 194.141477] dev_hard_start_xmit+0xc3/0x1e0 [ 194.144622] sch_direct_xmit+0xe3/0x280 [ 194.147748] __dev_queue_xmit+0x54a/0xb30 [ 194.154131] tap_get_user+0x2a8/0x9c0 [tap] [ 194.157358] tap_sendmsg+0x52/0x8e0 [tap] [ 194.167049] handle_tx_zerocopy+0x14e/0x4c0 [vhost_net] [ 194.173631] handle_tx+0xcd/0xe0 [vhost_net] [ 194.176959] vhost_worker+0x76/0xb0 [vhost] [ 194.183667] kthread+0x118/0x140 [ 194.190358] ret_from_fork+0x1f/0x30 [ 194.193670] </TASK> In this case calling skb_orphan_frags() updated nr_frags leaving nrfrags local variable in skb_segment() stale. This resulted in the code hitting i >= nrfrags prematurely and trying to move to next frag_skb using list_skb pointer, which was NULL, and caused kernel panic. Move the call to zero copy functions before using frags and nr_frags.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04c3eee4e13f60bf6f9a366ad39f88a01a57166e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ea35288c83b3d501a88bc17f2df8f176b5cc96f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c26ed3c6abe86ddab0510529000b970b05c9b40
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8836c266201c29a5acb4f582227686f47b65ad61
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d44403ec0676317b7f7edf2a035bb219fee3304e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5790386595d06ea9decfd9ba5f1ea48cf09aa02
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f99006e840a4dbc8f5a34cecc6b5b26c73ef49bb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcab3f661dbfd88e27ddbbe65368f3fa2d823175
Impacted products
Vendor Product Version
Linux Linux Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
Version: bf5c25d608613eaf4dcdba5a9cac5b2afe67d635
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   Linux Linux Version: 4.16
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
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          "vendor": "Linux",
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          "product": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "4.16"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.295",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.257",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.295",
                  "versionStartIncluding": "4.16",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "5.4.257",
                  "versionStartIncluding": "4.16",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "5.10.195",
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                  "vulnerable": true
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                  "versionEndExcluding": "5.15.132",
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                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.1.53",
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                  "versionEndExcluding": "6.4.16",
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                  "versionEndExcluding": "6.5.3",
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                  "versionEndExcluding": "6.6",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nskbuff: skb_segment, Call zero copy functions before using skbuff frags\n\nCommit bf5c25d60861 (\"skbuff: in skb_segment, call zerocopy functions\nonce per nskb\") added the call to zero copy functions in skb_segment().\nThe change introduced a bug in skb_segment() because skb_orphan_frags()\nmay possibly change the number of fragments or allocate new fragments\naltogether leaving nrfrags and frag to point to the old values. This can\ncause a panic with stacktrace like the one below.\n\n[  193.894380] BUG: kernel NULL pointer dereference, address: 00000000000000bc\n[  193.895273] CPU: 13 PID: 18164 Comm: vh-net-17428 Kdump: loaded Tainted: G           O      5.15.123+ #26\n[  193.903919] RIP: 0010:skb_segment+0xb0e/0x12f0\n[  194.021892] Call Trace:\n[  194.027422]  \u003cTASK\u003e\n[  194.072861]  tcp_gso_segment+0x107/0x540\n[  194.082031]  inet_gso_segment+0x15c/0x3d0\n[  194.090783]  skb_mac_gso_segment+0x9f/0x110\n[  194.095016]  __skb_gso_segment+0xc1/0x190\n[  194.103131]  netem_enqueue+0x290/0xb10 [sch_netem]\n[  194.107071]  dev_qdisc_enqueue+0x16/0x70\n[  194.110884]  __dev_queue_xmit+0x63b/0xb30\n[  194.121670]  bond_start_xmit+0x159/0x380 [bonding]\n[  194.128506]  dev_hard_start_xmit+0xc3/0x1e0\n[  194.131787]  __dev_queue_xmit+0x8a0/0xb30\n[  194.138225]  macvlan_start_xmit+0x4f/0x100 [macvlan]\n[  194.141477]  dev_hard_start_xmit+0xc3/0x1e0\n[  194.144622]  sch_direct_xmit+0xe3/0x280\n[  194.147748]  __dev_queue_xmit+0x54a/0xb30\n[  194.154131]  tap_get_user+0x2a8/0x9c0 [tap]\n[  194.157358]  tap_sendmsg+0x52/0x8e0 [tap]\n[  194.167049]  handle_tx_zerocopy+0x14e/0x4c0 [vhost_net]\n[  194.173631]  handle_tx+0xcd/0xe0 [vhost_net]\n[  194.176959]  vhost_worker+0x76/0xb0 [vhost]\n[  194.183667]  kthread+0x118/0x140\n[  194.190358]  ret_from_fork+0x1f/0x30\n[  194.193670]  \u003c/TASK\u003e\n\nIn this case calling skb_orphan_frags() updated nr_frags leaving nrfrags\nlocal variable in skb_segment() stale. This resulted in the code hitting\ni \u003e= nrfrags prematurely and trying to move to next frag_skb using\nlist_skb pointer, which was NULL, and caused kernel panic. Move the call\nto zero copy functions before using frags and nr_frags."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-17T14:56:44.388Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fcab3f661dbfd88e27ddbbe65368f3fa2d823175"
        },
        {
          "url": "https://git.kernel.org/stable/c/d44403ec0676317b7f7edf2a035bb219fee3304e"
        },
        {
          "url": "https://git.kernel.org/stable/c/8836c266201c29a5acb4f582227686f47b65ad61"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5790386595d06ea9decfd9ba5f1ea48cf09aa02"
        },
        {
          "url": "https://git.kernel.org/stable/c/04c3eee4e13f60bf6f9a366ad39f88a01a57166e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f99006e840a4dbc8f5a34cecc6b5b26c73ef49bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c26ed3c6abe86ddab0510529000b970b05c9b40"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ea35288c83b3d501a88bc17f2df8f176b5cc96f"
        }
      ],
      "title": "skbuff: skb_segment, Call zero copy functions before using skbuff frags",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53354",
    "datePublished": "2025-09-17T14:56:44.388Z",
    "dateReserved": "2025-09-16T16:08:59.567Z",
    "dateUpdated": "2025-09-17T14:56:44.388Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53354\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-17T15:15:39.403\",\"lastModified\":\"2025-09-18T13:43:34.310\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nskbuff: skb_segment, Call zero copy functions before using skbuff frags\\n\\nCommit bf5c25d60861 (\\\"skbuff: in skb_segment, call zerocopy functions\\nonce per nskb\\\") added the call to zero copy functions in skb_segment().\\nThe change introduced a bug in skb_segment() because skb_orphan_frags()\\nmay possibly change the number of fragments or allocate new fragments\\naltogether leaving nrfrags and frag to point to the old values. This can\\ncause a panic with stacktrace like the one below.\\n\\n[  193.894380] BUG: kernel NULL pointer dereference, address: 00000000000000bc\\n[  193.895273] CPU: 13 PID: 18164 Comm: vh-net-17428 Kdump: loaded Tainted: G           O      5.15.123+ #26\\n[  193.903919] RIP: 0010:skb_segment+0xb0e/0x12f0\\n[  194.021892] Call Trace:\\n[  194.027422]  \u003cTASK\u003e\\n[  194.072861]  tcp_gso_segment+0x107/0x540\\n[  194.082031]  inet_gso_segment+0x15c/0x3d0\\n[  194.090783]  skb_mac_gso_segment+0x9f/0x110\\n[  194.095016]  __skb_gso_segment+0xc1/0x190\\n[  194.103131]  netem_enqueue+0x290/0xb10 [sch_netem]\\n[  194.107071]  dev_qdisc_enqueue+0x16/0x70\\n[  194.110884]  __dev_queue_xmit+0x63b/0xb30\\n[  194.121670]  bond_start_xmit+0x159/0x380 [bonding]\\n[  194.128506]  dev_hard_start_xmit+0xc3/0x1e0\\n[  194.131787]  __dev_queue_xmit+0x8a0/0xb30\\n[  194.138225]  macvlan_start_xmit+0x4f/0x100 [macvlan]\\n[  194.141477]  dev_hard_start_xmit+0xc3/0x1e0\\n[  194.144622]  sch_direct_xmit+0xe3/0x280\\n[  194.147748]  __dev_queue_xmit+0x54a/0xb30\\n[  194.154131]  tap_get_user+0x2a8/0x9c0 [tap]\\n[  194.157358]  tap_sendmsg+0x52/0x8e0 [tap]\\n[  194.167049]  handle_tx_zerocopy+0x14e/0x4c0 [vhost_net]\\n[  194.173631]  handle_tx+0xcd/0xe0 [vhost_net]\\n[  194.176959]  vhost_worker+0x76/0xb0 [vhost]\\n[  194.183667]  kthread+0x118/0x140\\n[  194.190358]  ret_from_fork+0x1f/0x30\\n[  194.193670]  \u003c/TASK\u003e\\n\\nIn this case calling skb_orphan_frags() updated nr_frags leaving nrfrags\\nlocal variable in skb_segment() stale. This resulted in the code hitting\\ni \u003e= nrfrags prematurely and trying to move to next frag_skb using\\nlist_skb pointer, which was NULL, and caused kernel panic. Move the call\\nto zero copy functions before using frags and nr_frags.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/04c3eee4e13f60bf6f9a366ad39f88a01a57166e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2ea35288c83b3d501a88bc17f2df8f176b5cc96f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6c26ed3c6abe86ddab0510529000b970b05c9b40\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8836c266201c29a5acb4f582227686f47b65ad61\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d44403ec0676317b7f7edf2a035bb219fee3304e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d5790386595d06ea9decfd9ba5f1ea48cf09aa02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f99006e840a4dbc8f5a34cecc6b5b26c73ef49bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fcab3f661dbfd88e27ddbbe65368f3fa2d823175\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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