CVE-2023-54006

UNRATEDCVSS · not yet scored

Also known asEUVD-2025-205154 (ENISA EUVD) · GHSA-c5hc-c94v-v6gh (GitHub Security Advisories)Source: ENISA EUVD

—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

af_unix: Fix data-race around unix_tot_inflight.

unix_tot_inflight is changed under spin_lock(unix_gc_lock), but unix_release_sock() reads it locklessly.

Let's use READ_ONCE() for unix_tot_inflight.

Note that the writer side was marked by commit 9d6d7f1cb67c ("af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress")

BUG: KCSAN: data-race in unix_inflight / unix_release_sock

write (marked) to 0xffffffff871852b8 of 4 bytes by task 123 on cpu 1: unix_inflight+0x130/0x180 net/unix/scm.c:64 unix_attach_fds+0x137/0x1b0 net/unix/scm.c:123 unix_scm_to_skb net/unix/af_unix.c:1832 [inline] unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1955 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0x148/0x160 net/socket.c:747 ____sys_sendmsg+0x4e4/0x610 net/socket.c:2493 ___sys_sendmsg+0xc6/0x140 net/socket.c:2547 __sys_sendmsg+0x94/0x140 net/socket.c:2576 __do_sys_sendmsg net/socket.c:2585 [inline] __se_sys_sendmsg net/socket.c:2583 [inline] __x64_sys_sendmsg+0x45/0x50 net/socket.c:2583 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc

read to 0xffffffff871852b8 of 4 bytes by task 4891 on cpu 0: unix_release_sock+0x608/0x910 net/unix/af_unix.c:671 unix_release+0x59/0x80 net/unix/af_unix.c:1058 __sock_release+0x7d/0x170 net/socket.c:653 sock_close+0x19/0x30 net/socket.c:1385 __fput+0x179/0x5e0 fs/file_table.c:321 ____fput+0x15/0x20 fs/file_table.c:349 task_work_run+0x116/0x1a0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x174/0x180 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:297 do_syscall_64+0x4b/0x90 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x72/0xdc

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 4891 Comm: systemd-coredum Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

EG Severity
Not assessed: no CVSS publishedA missing CVSS is not a severity of zero.
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-26). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
No SSVC decision: EchelonGraph has not assessed this CVECISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the BOD 26-04 block below.

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

December 24, 2025

Last Modified

April 15, 2026

References (8)

Vendor Advisories for CVE-2023-54006(1)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
linuxKernel @ 4.14.326 (fixes >=2.6.24)—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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (34 versions)
  • every version up to 5.10.197-1: fixed in 5.10.197-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.27-1 ... 6.1.55-1~bpo11+1 (10 versions)
  • every version up to 6.1.55-1: fixed in 6.1.55-1
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Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.5.6-1: fixed in 6.5.6-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.5.6-1: fixed in 6.5.6-1
—

Data Freshness Timeline

(refreshed 7× in last 7d / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 94 of 229 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 6 repeat rows among the latest 100 are merged into the row they repeat. The 135 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-03 16:41 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-11-02 16:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-30 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-27 10:46 UTCEG score recompute
  10. 2026-10-27 10:46 UTCVendor advisory
  11. 2026-10-27 10:46 UTCGHSA enrichmentGHSA-c5hc-c94v-v6gh
  12. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-10-25 23:55 UTCOSV refresh
  14. 2026-10-25 17:27 UTCEG score recompute
  15. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-24 16:29 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  22. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  23. 2026-10-18 07:40 UTCEG score recompute
  24. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.2% · 11th percentile
Show 69 more
  1. 2026-10-15 16:29 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  3. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  4. 2026-10-12 18:11 UTCEG score recompute
  5. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  6. 2026-10-11 21:37 UTCEG score recompute
  7. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-10-03 13:09 UTCOSV refresh
  17. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-09-30 16:38 UTCEG score recompute
  19. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  22. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  23. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  24. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  26. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  27. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  28. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  29. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  30. 2026-09-14 05:50 UTCOSV refresh
  31. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  32. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  33. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  34. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  35. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  36. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  37. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  38. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  39. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  40. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  41. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  42. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  43. 2026-09-01 04:36 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  44. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  45. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  46. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  47. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  49. 2026-08-26 07:13 UTCOSV refresh
  50. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  51. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  52. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  53. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  54. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  55. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  56. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  57. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  58. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  59. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  62. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  63. 2026-08-09 22:55 UTCVendor advisory
  64. 2026-08-09 22:55 UTCGHSA enrichmentGHSA-c5hc-c94v-v6gh
  65. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  66. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  67. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  68. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  69. 2026-08-06 07:19 UTCEG score recompute

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2023-54006?
CVE-2023-54006 is a vulnerability whose severity is not yet rated; its CVE record was published on December 24, 2025. In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data-race around unix_tot_inflight. unix_tot_inflight is changed under spin_lock(unix_gc_lock), but unix_release_sock() reads it locklessly. Let's use READ_ONCE() for unix_tot_inflight. Note that the writer side was…
When was the CVE record for CVE-2023-54006 published?
The CVE record for CVE-2023-54006 was published on December 24, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 15, 2026; the record at its source may have been updated since.
Is CVE-2023-54006 actively exploited?
CVE-2023-54006 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
How do I remediate CVE-2023-54006?
A fix for CVE-2023-54006 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-54006 are linked in the Vendor Advisories panel on this page.

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