CVE-2024-50261 (GCVE-0-2024-50261)

Vulnerability from cvelistv5 – Published: 2024-11-09 10:15 – Updated: 2025-11-03 22:27
VLAI?
Title
macsec: Fix use-after-free while sending the offloading packet
Summary
In the Linux kernel, the following vulnerability has been resolved: macsec: Fix use-after-free while sending the offloading packet KASAN reports the following UAF. The metadata_dst, which is used to store the SCI value for macsec offload, is already freed by metadata_dst_free() in macsec_free_netdev(), while driver still use it for sending the packet. To fix this issue, dst_release() is used instead to release metadata_dst. So it is not freed instantly in macsec_free_netdev() if still referenced by skb. BUG: KASAN: slab-use-after-free in mlx5e_xmit+0x1e8f/0x4190 [mlx5_core] Read of size 2 at addr ffff88813e42e038 by task kworker/7:2/714 [...] Workqueue: mld mld_ifc_work Call Trace: <TASK> dump_stack_lvl+0x51/0x60 print_report+0xc1/0x600 kasan_report+0xab/0xe0 mlx5e_xmit+0x1e8f/0x4190 [mlx5_core] dev_hard_start_xmit+0x120/0x530 sch_direct_xmit+0x149/0x11e0 __qdisc_run+0x3ad/0x1730 __dev_queue_xmit+0x1196/0x2ed0 vlan_dev_hard_start_xmit+0x32e/0x510 [8021q] dev_hard_start_xmit+0x120/0x530 __dev_queue_xmit+0x14a7/0x2ed0 macsec_start_xmit+0x13e9/0x2340 dev_hard_start_xmit+0x120/0x530 __dev_queue_xmit+0x14a7/0x2ed0 ip6_finish_output2+0x923/0x1a70 ip6_finish_output+0x2d7/0x970 ip6_output+0x1ce/0x3a0 NF_HOOK.constprop.0+0x15f/0x190 mld_sendpack+0x59a/0xbd0 mld_ifc_work+0x48a/0xa80 process_one_work+0x5aa/0xe50 worker_thread+0x79c/0x1290 kthread+0x28f/0x350 ret_from_fork+0x2d/0x70 ret_from_fork_asm+0x11/0x20 </TASK> Allocated by task 3922: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 __kasan_kmalloc+0x77/0x90 __kmalloc_noprof+0x188/0x400 metadata_dst_alloc+0x1f/0x4e0 macsec_newlink+0x914/0x1410 __rtnl_newlink+0xe08/0x15b0 rtnl_newlink+0x5f/0x90 rtnetlink_rcv_msg+0x667/0xa80 netlink_rcv_skb+0x12c/0x360 netlink_unicast+0x551/0x770 netlink_sendmsg+0x72d/0xbd0 __sock_sendmsg+0xc5/0x190 ____sys_sendmsg+0x52e/0x6a0 ___sys_sendmsg+0xeb/0x170 __sys_sendmsg+0xb5/0x140 do_syscall_64+0x4c/0x100 entry_SYSCALL_64_after_hwframe+0x4b/0x53 Freed by task 4011: kasan_save_stack+0x20/0x40 kasan_save_track+0x10/0x30 kasan_save_free_info+0x37/0x50 poison_slab_object+0x10c/0x190 __kasan_slab_free+0x11/0x30 kfree+0xe0/0x290 macsec_free_netdev+0x3f/0x140 netdev_run_todo+0x450/0xc70 rtnetlink_rcv_msg+0x66f/0xa80 netlink_rcv_skb+0x12c/0x360 netlink_unicast+0x551/0x770 netlink_sendmsg+0x72d/0xbd0 __sock_sendmsg+0xc5/0x190 ____sys_sendmsg+0x52e/0x6a0 ___sys_sendmsg+0xeb/0x170 __sys_sendmsg+0xb5/0x140 do_syscall_64+0x4c/0x100 entry_SYSCALL_64_after_hwframe+0x4b/0x53
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0a28bfd4971fd570d1f3e4653b21415becefc92c , < 872932cf75cf859804370a265dd58118129386fa (git)
Affected: 0a28bfd4971fd570d1f3e4653b21415becefc92c , < 9f5ae743dbe9a2458540a7d35fff0f990df025cf (git)
Affected: 0a28bfd4971fd570d1f3e4653b21415becefc92c , < 4614640f1d5c93c22272117dc256e9940ccac8e8 (git)
Affected: 0a28bfd4971fd570d1f3e4653b21415becefc92c , < f1e54d11b210b53d418ff1476c6b58a2f434dfc0 (git)
Create a notification for this product.
    Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.116 , ≤ 6.1.* (semver)
Unaffected: 6.6.60 , ≤ 6.6.* (semver)
Unaffected: 6.11.7 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "url": "https://git.kernel.org/stable/c/4614640f1d5c93c22272117dc256e9940ccac8e8"
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      "title": "macsec: Fix use-after-free while sending the offloading packet",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50261",
    "datePublished": "2024-11-09T10:15:14.259Z",
    "dateReserved": "2024-10-21T19:36:19.981Z",
    "dateUpdated": "2025-11-03T22:27:40.612Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50261\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-12-11T14:25:36.484321Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-12-11T14:25:38.055Z\"}}], \"cna\": {\"title\": \"macsec: Fix use-after-free while sending the offloading packet\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0a28bfd4971fd570d1f3e4653b21415becefc92c\", \"lessThan\": \"872932cf75cf859804370a265dd58118129386fa\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0a28bfd4971fd570d1f3e4653b21415becefc92c\", \"lessThan\": \"9f5ae743dbe9a2458540a7d35fff0f990df025cf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0a28bfd4971fd570d1f3e4653b21415becefc92c\", \"lessThan\": \"4614640f1d5c93c22272117dc256e9940ccac8e8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0a28bfd4971fd570d1f3e4653b21415becefc92c\", \"lessThan\": \"f1e54d11b210b53d418ff1476c6b58a2f434dfc0\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/macsec.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.116\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.60\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/macsec.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/872932cf75cf859804370a265dd58118129386fa\"}, {\"url\": \"https://git.kernel.org/stable/c/9f5ae743dbe9a2458540a7d35fff0f990df025cf\"}, {\"url\": \"https://git.kernel.org/stable/c/4614640f1d5c93c22272117dc256e9940ccac8e8\"}, {\"url\": \"https://git.kernel.org/stable/c/f1e54d11b210b53d418ff1476c6b58a2f434dfc0\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmacsec: Fix use-after-free while sending the offloading packet\\n\\nKASAN reports the following UAF. The metadata_dst, which is used to\\nstore the SCI value for macsec offload, is already freed by\\nmetadata_dst_free() in macsec_free_netdev(), while driver still use it\\nfor sending the packet.\\n\\nTo fix this issue, dst_release() is used instead to release\\nmetadata_dst. So it is not freed instantly in macsec_free_netdev() if\\nstill referenced by skb.\\n\\n BUG: KASAN: slab-use-after-free in mlx5e_xmit+0x1e8f/0x4190 [mlx5_core]\\n Read of size 2 at addr ffff88813e42e038 by task kworker/7:2/714\\n [...]\\n Workqueue: mld mld_ifc_work\\n Call Trace:\\n  \u003cTASK\u003e\\n  dump_stack_lvl+0x51/0x60\\n  print_report+0xc1/0x600\\n  kasan_report+0xab/0xe0\\n  mlx5e_xmit+0x1e8f/0x4190 [mlx5_core]\\n  dev_hard_start_xmit+0x120/0x530\\n  sch_direct_xmit+0x149/0x11e0\\n  __qdisc_run+0x3ad/0x1730\\n  __dev_queue_xmit+0x1196/0x2ed0\\n  vlan_dev_hard_start_xmit+0x32e/0x510 [8021q]\\n  dev_hard_start_xmit+0x120/0x530\\n  __dev_queue_xmit+0x14a7/0x2ed0\\n  macsec_start_xmit+0x13e9/0x2340\\n  dev_hard_start_xmit+0x120/0x530\\n  __dev_queue_xmit+0x14a7/0x2ed0\\n  ip6_finish_output2+0x923/0x1a70\\n  ip6_finish_output+0x2d7/0x970\\n  ip6_output+0x1ce/0x3a0\\n  NF_HOOK.constprop.0+0x15f/0x190\\n  mld_sendpack+0x59a/0xbd0\\n  mld_ifc_work+0x48a/0xa80\\n  process_one_work+0x5aa/0xe50\\n  worker_thread+0x79c/0x1290\\n  kthread+0x28f/0x350\\n  ret_from_fork+0x2d/0x70\\n  ret_from_fork_asm+0x11/0x20\\n  \u003c/TASK\u003e\\n\\n Allocated by task 3922:\\n  kasan_save_stack+0x20/0x40\\n  kasan_save_track+0x10/0x30\\n  __kasan_kmalloc+0x77/0x90\\n  __kmalloc_noprof+0x188/0x400\\n  metadata_dst_alloc+0x1f/0x4e0\\n  macsec_newlink+0x914/0x1410\\n  __rtnl_newlink+0xe08/0x15b0\\n  rtnl_newlink+0x5f/0x90\\n  rtnetlink_rcv_msg+0x667/0xa80\\n  netlink_rcv_skb+0x12c/0x360\\n  netlink_unicast+0x551/0x770\\n  netlink_sendmsg+0x72d/0xbd0\\n  __sock_sendmsg+0xc5/0x190\\n  ____sys_sendmsg+0x52e/0x6a0\\n  ___sys_sendmsg+0xeb/0x170\\n  __sys_sendmsg+0xb5/0x140\\n  do_syscall_64+0x4c/0x100\\n  entry_SYSCALL_64_after_hwframe+0x4b/0x53\\n\\n Freed by task 4011:\\n  kasan_save_stack+0x20/0x40\\n  kasan_save_track+0x10/0x30\\n  kasan_save_free_info+0x37/0x50\\n  poison_slab_object+0x10c/0x190\\n  __kasan_slab_free+0x11/0x30\\n  kfree+0xe0/0x290\\n  macsec_free_netdev+0x3f/0x140\\n  netdev_run_todo+0x450/0xc70\\n  rtnetlink_rcv_msg+0x66f/0xa80\\n  netlink_rcv_skb+0x12c/0x360\\n  netlink_unicast+0x551/0x770\\n  netlink_sendmsg+0x72d/0xbd0\\n  __sock_sendmsg+0xc5/0x190\\n  ____sys_sendmsg+0x52e/0x6a0\\n  ___sys_sendmsg+0xeb/0x170\\n  __sys_sendmsg+0xb5/0x140\\n  do_syscall_64+0x4c/0x100\\n  entry_SYSCALL_64_after_hwframe+0x4b/0x53\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.116\", \"versionStartIncluding\": \"6.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.60\", \"versionStartIncluding\": \"6.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.7\", \"versionStartIncluding\": \"6.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:50:09.941Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50261\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:50:09.941Z\", \"dateReserved\": \"2024-10-21T19:36:19.981Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-09T10:15:14.259Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • 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.