CVE-2023-52922

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-11-28. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

can: bcm: Fix UAF in bcm_proc_show()

BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80 Read of size 8 at addr ffff888155846230 by task cat/7862

CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xd5/0x150 print_report+0xc1/0x5e0 kasan_report+0xba/0xf0 bcm_proc_show+0x969/0xa80 seq_read_iter+0x4f6/0x1260 seq_read+0x165/0x210 proc_reg_read+0x227/0x300 vfs_read+0x1d5/0x8d0 ksys_read+0x11e/0x240 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Allocated by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x9e/0xa0 bcm_sendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 ____kasan_slab_free+0x161/0x1c0 slab_free_freelist_hook+0x119/0x220 __kmem_cache_free+0xb4/0x2e0 rcu_core+0x809/0x1bd0

bcm_op is freed before procfs entry be removed in bcm_release(), this lead to bcm_proc_show() may read the freed bcm_op.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

November 28, 2024

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/55c3b96074f3f9b0aee19bf93cd71af7516582bb
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/995f47d76647708ec26c6e388663ad4f3f264787
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3c3941bb1eb53abe7d640ffee5c4d6b559829ab3
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cf254b4f68e480e73dab055014e002b77aed30ed
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ff
generic

can: bcm: Fix UAF in bcm_proc_show() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/11b8e27ed448baa385d90154a141466bd5e92f18

Vendor Advisories for CVE-2023-52922(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkpatch-patch2025-03-24redhat
redhatkernel-rt-0:5.14.0-284.109.1.rt14.394.el9_22025-03-19redhat
redhatkernel-0:4.18.0-553.45.1.el8_102025-03-19redhat
redhatkernel-rt-0:4.18.0-553.45.1.rt7.386.el8_102025-03-19redhat
redhatkernel-0:5.14.0-284.109.1.el9_22025-03-19redhat
redhatkernel-0:5.14.0-503.31.1.el9_52025-03-11redhat
redhatkernel-0:4.18.0-193.146.1.el8_22025-03-11redhat
redhatkernel-0:4.18.0-477.93.1.el8_82025-03-10redhat
redhatkernel-0:5.14.0-70.125.1.el9_02025-03-10redhat
redhatkernel-0:5.14.0-427.59.1.el9_42025-03-10redhat
redhatkernel-0:4.18.0-305.151.1.el8_42025-03-10redhat
redhatkernel-rt-0:5.14.0-70.125.1.rt21.197.el9_02025-03-10redhat
redhatkernel-0:3.10.0-1062.93.1.el72025-03-10redhat
redhatkernel-0:3.10.0-1160.133.1.el72025-03-10redhat
redhatkernel-rt-0:3.10.0-1160.133.1.rt56.1285.el72025-03-10redhat
redhatkernel-0:2.6.32-754.56.1.el62025-03-10redhat
redhatkernel-rt-0:4.18.0-305.151.1.rt7.228.el8_42025-03-10redhat
redhatkernel-0:4.18.0-372.141.1.el8_62025-03-10redhat
linuxKernel @ 4.14.322—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 123 total refreshes for this CVE.

  1. 2026-08-07 16:25 UTCEPSS rescore
  2. 2026-08-06 13:45 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-05 19:15 UTCEPSS rescore
  5. 2026-08-05 10:21 UTCEG score recompute
  6. 2026-08-05 10:21 UTCVendor advisory
  7. 2026-08-05 10:21 UTCGHSA enrichment
  8. 2026-08-04 10:36 UTCEPSS rescore
  9. 2026-08-04 09:47 UTCEG score recompute
  10. 2026-08-04 09:47 UTCVendor advisory
  11. 2026-08-04 09:47 UTCGHSA enrichment
  12. 2026-08-03 10:34 UTCEPSS rescore
  13. 2026-08-02 02:25 UTCEPSS rescore
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  15. 2026-08-01 04:14 UTCEPSS rescore
  16. 2026-07-31 10:42 UTCOSV refresh
  17. 2026-07-30 16:26 UTCEPSS rescore
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  19. 2026-07-28 15:34 UTCEPSS rescore
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  24. 2026-07-23 14:16 UTCEPSS rescore
  25. 2026-07-23 02:29 UTCEG score recompute
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  1. 2026-07-22 23:16 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
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  4. 2026-07-21 15:23 UTCEPSS rescore
  5. 2026-07-20 17:06 UTCEPSS rescore
  6. 2026-07-19 14:30 UTCEPSS rescore
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  16. 2026-07-13 22:28 UTCEPSS rescore
  17. 2026-07-13 22:28 UTCEPSS rescore
  18. 2026-07-13 18:07 UTCOSV refresh
  19. 2026-07-13 06:11 UTCEPSS rescore
  20. 2026-07-12 05:45 UTCEPSS rescore
  21. 2026-07-12 05:45 UTCEPSS rescore
  22. 2026-07-11 08:26 UTCEPSS rescore
  23. 2026-07-09 19:08 UTCEPSS rescore
  24. 2026-07-08 15:13 UTCEPSS rescore
  25. 2026-07-07 13:45 UTCEPSS rescore
  26. 2026-07-07 13:44 UTCEPSS rescore
  27. 2026-07-06 16:26 UTCEPSS rescore
  28. 2026-07-06 16:26 UTCEPSS rescore
  29. 2026-07-06 02:22 UTCEPSS rescore
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  31. 2026-07-05 02:29 UTCEPSS rescore
  32. 2026-07-01 15:05 UTCEPSS rescore
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  38. 2026-06-28 04:55 UTCEPSS rescore
  39. 2026-06-27 03:07 UTCEPSS rescore
  40. 2026-06-25 15:16 UTCOSV refresh
  41. 2026-06-25 13:48 UTCEPSS rescore
  42. 2026-06-25 13:48 UTCEPSS rescore
  43. 2026-06-24 14:04 UTCEPSS rescore
  44. 2026-06-24 14:04 UTCEPSS rescore
  45. 2026-06-23 21:31 UTCEPSS rescore
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  47. 2026-06-22 14:24 UTCEPSS rescore
  48. 2026-06-22 14:24 UTCEPSS rescore
  49. 2026-06-21 14:55 UTCEPSS rescore
  50. 2026-06-21 14:55 UTCEPSS rescore
  51. 2026-06-21 01:58 UTCEPSS rescore
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  53. 2026-06-19 19:24 UTCEPSS rescore
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  55. 2026-06-18 17:51 UTCEPSS rescore
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  63. 2026-06-12 23:11 UTCEPSS rescore
  64. 2026-06-11 13:59 UTCEPSS rescore
  65. 2026-06-10 22:17 UTCEPSS rescore
  66. 2026-06-10 13:21 UTCEPSS rescore
  67. 2026-06-08 14:16 UTCEPSS rescore
  68. 2026-06-08 14:16 UTCEPSS rescore
  69. 2026-06-08 05:28 UTCOSV refresh
  70. 2026-06-07 15:24 UTCEPSS rescore
  71. 2026-06-07 15:24 UTCEPSS rescore
  72. 2026-06-06 13:46 UTCEPSS rescore
  73. 2026-06-06 13:46 UTCEPSS rescore
  74. 2026-06-05 22:46 UTCEPSS rescore
  75. 2026-06-05 22:46 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-52922?
CVE-2023-52922 is a high vulnerability published on November 28, 2024. In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcmprocshow() BUG: KASAN: slab-use-after-free in bcmprocshow+0x969/0xa80 Read of size 8 at addr ffff888155846230 by task cat/7862 CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230…
When was CVE-2023-52922 disclosed?
CVE-2023-52922 was first published in the National Vulnerability Database on November 28, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-52922 actively exploited?
CVE-2023-52922 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.2% of all scored CVEs.
What is the CVSS score of CVE-2023-52922?
CVE-2023-52922 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-52922?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-52922, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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