CVE-2024-35855 (GCVE-0-2024-35855)

Vulnerability from cvelistv5 – Published: 2024-05-17 14:47 – Updated: 2025-05-04 09:06
VLAI?
Title
mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update
Summary
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update The rule activity update delayed work periodically traverses the list of configured rules and queries their activity from the device. As part of this task it accesses the entry pointed by 'ventry->entry', but this entry can be changed concurrently by the rehash delayed work, leading to a use-after-free [1]. Fix by closing the race and perform the activity query under the 'vregion->lock' mutex. [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140 Read of size 8 at addr ffff8881054ed808 by task kworker/0:18/181 CPU: 0 PID: 181 Comm: kworker/0:18 Not tainted 6.9.0-rc2-custom-00781-gd5ab772d32f7 #2 Hardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019 Workqueue: mlxsw_core mlxsw_sp_acl_rule_activity_update_work Call Trace: <TASK> dump_stack_lvl+0xc6/0x120 print_report+0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140 mlxsw_sp_acl_rule_activity_update_work+0x219/0x400 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30 </TASK> Allocated by task 1039: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 __kmalloc+0x19c/0x360 mlxsw_sp_acl_tcam_entry_create+0x7b/0x1f0 mlxsw_sp_acl_tcam_vchunk_migrate_all+0x30d/0xb50 mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30 Freed by task 1039: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 poison_slab_object+0x102/0x170 __kasan_slab_free+0x14/0x30 kfree+0xc1/0x290 mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3d7/0xb50 mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < 1b73f6e4ea770410a937a8db98f77e52594d23a0 (git)
Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < e24d2487424779c02760ff50cd9021b8676e19ef (git)
Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < c17976b42d546ee118ca300db559630ee96fb758 (git)
Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < b996e8699da810e4c915841d6aaef761007f933a (git)
Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < feabdac2057e863d0e140a2adf3d232eb4882db4 (git)
Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < b183b915beef818a25e3154d719ca015a1ae0770 (git)
Affected: 2bffc5322fd8679e879cd6370881ee50cf141ada , < 79b5b4b18bc85b19d3a518483f9abbbe6d7b3ba4 (git)
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    Linux Linux Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 5.4.275 , ≤ 5.4.* (semver)
Unaffected: 5.10.216 , ≤ 5.10.* (semver)
Unaffected: 5.15.158 , ≤ 5.15.* (semver)
Unaffected: 6.1.90 , ≤ 6.1.* (semver)
Unaffected: 6.6.30 , ≤ 6.6.* (semver)
Unaffected: 6.8.9 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.90\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.30\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1b73f6e4ea770410a937a8db98f77e52594d23a0\"}, {\"url\": \"https://git.kernel.org/stable/c/e24d2487424779c02760ff50cd9021b8676e19ef\"}, {\"url\": \"https://git.kernel.org/stable/c/c17976b42d546ee118ca300db559630ee96fb758\"}, {\"url\": \"https://git.kernel.org/stable/c/b996e8699da810e4c915841d6aaef761007f933a\"}, {\"url\": \"https://git.kernel.org/stable/c/feabdac2057e863d0e140a2adf3d232eb4882db4\"}, {\"url\": \"https://git.kernel.org/stable/c/b183b915beef818a25e3154d719ca015a1ae0770\"}, {\"url\": \"https://git.kernel.org/stable/c/79b5b4b18bc85b19d3a518483f9abbbe6d7b3ba4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update\\n\\nThe rule activity update delayed work periodically traverses the list of\\nconfigured rules and queries their activity from the device.\\n\\nAs part of this task it accesses the entry pointed by \u0027ventry-\u003eentry\u0027,\\nbut this entry can be changed concurrently by the rehash delayed work,\\nleading to a use-after-free [1].\\n\\nFix by closing the race and perform the activity query under the\\n\u0027vregion-\u003elock\u0027 mutex.\\n\\n[1]\\nBUG: KASAN: slab-use-after-free in mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140\\nRead of size 8 at addr ffff8881054ed808 by task kworker/0:18/181\\n\\nCPU: 0 PID: 181 Comm: kworker/0:18 Not tainted 6.9.0-rc2-custom-00781-gd5ab772d32f7 #2\\nHardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019\\nWorkqueue: mlxsw_core mlxsw_sp_acl_rule_activity_update_work\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0xc6/0x120\\n print_report+0xce/0x670\\n kasan_report+0xd7/0x110\\n mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140\\n mlxsw_sp_acl_rule_activity_update_work+0x219/0x400\\n process_one_work+0x8eb/0x19b0\\n worker_thread+0x6c9/0xf70\\n kthread+0x2c9/0x3b0\\n ret_from_fork+0x4d/0x80\\n ret_from_fork_asm+0x1a/0x30\\n \u003c/TASK\u003e\\n\\nAllocated by task 1039:\\n kasan_save_stack+0x33/0x60\\n kasan_save_track+0x14/0x30\\n __kasan_kmalloc+0x8f/0xa0\\n __kmalloc+0x19c/0x360\\n mlxsw_sp_acl_tcam_entry_create+0x7b/0x1f0\\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x30d/0xb50\\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\\n process_one_work+0x8eb/0x19b0\\n worker_thread+0x6c9/0xf70\\n kthread+0x2c9/0x3b0\\n ret_from_fork+0x4d/0x80\\n ret_from_fork_asm+0x1a/0x30\\n\\nFreed by task 1039:\\n kasan_save_stack+0x33/0x60\\n kasan_save_track+0x14/0x30\\n kasan_save_free_info+0x3b/0x60\\n poison_slab_object+0x102/0x170\\n __kasan_slab_free+0x14/0x30\\n kfree+0xc1/0x290\\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3d7/0xb50\\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\\n process_one_work+0x8eb/0x19b0\\n worker_thread+0x6c9/0xf70\\n kthread+0x2c9/0x3b0\\n ret_from_fork+0x4d/0x80\\n ret_from_fork_asm+0x1a/0x30\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.275\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.216\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.158\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.90\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.30\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.9\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"5.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:06:55.614Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35855\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:06:55.614Z\", \"dateReserved\": \"2024-05-17T13:50:33.106Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-17T14:47:31.436Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

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.
  • 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.