CVE-2024-26750

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2024-04-04. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

af_unix: Drop oob_skb ref before purging queue in GC.

syzbot reported another task hung in __unix_gc(). [0]

The current while loop assumes that all of the left candidates have oob_skb and calling kfree_skb(oob_skb) releases the remaining candidates.

However, I missed a case that oob_skb has self-referencing fd and another fd and the latter sk is placed before the former in the candidate list. Then, the while loop never proceeds, resulting the task hung.

__unix_gc() has the same loop just before purging the collected skb, so we can call kfree_skb(oob_skb) there and let __skb_queue_purge() release all inflight sockets.

[0]: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2784 Comm: kworker/u4:8 Not tainted 6.8.0-rc4-syzkaller-01028-g71b605d32017 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: events_unbound __unix_gc RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200 Code: 89 fb e8 23 00 00 00 48 8b 3d 84 f5 1a 0c 48 89 de 5b e9 43 26 57 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0d 90 52 70 7e 65 8b 15 91 52 70 RSP: 0018:ffffc9000a17fa78 EFLAGS: 00000287 RAX: ffffffff8a0a6108 RBX: ffff88802b6c2640 RCX: ffff88802c0b3b80 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc9000a17fbf0 R08: ffffffff89383f1d R09: 1ffff1100ee5ff84 R10: dffffc0000000000 R11: ffffed100ee5ff85 R12: 1ffff110056d84ee R13: ffffc9000a17fae0 R14: 0000000000000000 R15: ffffffff8f47b840 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffef5687ff8 CR3: 0000000029b34000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __unix_gc+0xe69/0xf40 net/unix/garbage.c:343 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787 kthread+0x2ef/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

April 4, 2024

Last Modified

March 18, 2025

References (10)

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.110.120~20.04.1) @ focal2026-05-24ubuntu
ubuntulinux-tools-kvm (5.15.0.1060.56) @ jammy2026-05-24ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1061.57) @ jammy2026-05-24ubuntu
ubuntulinux-tools-nvidia-lowlatency (5.15.0.1058.58) @ jammy2026-05-24ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1058.64~20.04.1) @ focal2026-05-24ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1063.63) @ jammy2026-05-24ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1066.64) @ jammy2026-05-24ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1058.56) @ jammy2026-05-24ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.113.123~20.04.1) @ focal2026-05-24ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1057.60~20.04.1) @ focal2026-05-24ubuntu
linuxKernel @ 5.15.151—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.

All Vendor Advisories

(10)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 41× 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 127 total refreshes for this CVE.

  1. 2026-08-06 13:45 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-04 15:08 UTCEPSS rescore
  4. 2026-08-04 10:36 UTCEPSS rescore
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  8. 2026-08-01 08:06 UTCOSV refresh
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  19. 2026-07-23 02:34 UTCEG score recompute
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  1. 2026-07-19 02:28 UTCEPSS rescore
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  3. 2026-07-18 10:03 UTCEPSS rescore
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  5. 2026-07-15 16:56 UTCEPSS rescore
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  7. 2026-07-15 01:59 UTCEPSS rescore
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  9. 2026-07-14 15:10 UTCOSV refresh
  10. 2026-07-13 22:28 UTCEPSS rescore
  11. 2026-07-13 06:11 UTCEPSS rescore
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  13. 2026-07-12 05:45 UTCEPSS rescore
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  15. 2026-07-09 19:09 UTCEPSS rescore
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  17. 2026-07-08 15:13 UTCEPSS rescore
  18. 2026-07-07 13:45 UTCEPSS rescore
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  20. 2026-07-06 16:26 UTCEPSS rescore
  21. 2026-07-06 02:22 UTCEPSS rescore
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  23. 2026-07-05 02:29 UTCEPSS rescore
  24. 2026-07-04 06:30 UTCEPSS rescore
  25. 2026-07-01 15:05 UTCEPSS rescore
  26. 2026-06-30 23:21 UTCEPSS rescore
  27. 2026-06-30 23:21 UTCEPSS rescore
  28. 2026-06-29 14:05 UTCEPSS rescore
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  31. 2026-06-28 04:55 UTCEPSS rescore
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  33. 2026-06-27 03:07 UTCEPSS rescore
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  35. 2026-06-26 16:07 UTCOSV refresh
  36. 2026-06-25 13:48 UTCEPSS rescore
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  38. 2026-06-24 14:04 UTCEPSS rescore
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  40. 2026-06-23 21:32 UTCEPSS rescore
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  42. 2026-06-22 14:24 UTCEPSS rescore
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  44. 2026-06-21 14:55 UTCEPSS rescore
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  46. 2026-06-21 01:58 UTCEPSS rescore
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  48. 2026-06-19 19:24 UTCEPSS rescore
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  50. 2026-06-18 17:51 UTCEPSS rescore
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  58. 2026-06-13 22:59 UTCEPSS rescore
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  60. 2026-06-12 23:11 UTCEPSS rescore
  61. 2026-06-11 13:59 UTCEPSS rescore
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  63. 2026-06-10 22:17 UTCEPSS rescore
  64. 2026-06-10 13:21 UTCEPSS rescore
  65. 2026-06-10 13:21 UTCEPSS rescore
  66. 2026-06-08 22:37 UTCOSV refresh
  67. 2026-06-08 14:16 UTCEPSS rescore
  68. 2026-06-08 14:16 UTCEPSS rescore
  69. 2026-06-07 15:24 UTCEPSS rescore
  70. 2026-06-07 15:24 UTCEPSS rescore
  71. 2026-06-06 13:46 UTCEPSS rescore
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  73. 2026-06-05 22:46 UTCEPSS rescore
  74. 2026-06-05 22:46 UTCEPSS rescore
  75. 2026-06-05 06:09 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-26750?
CVE-2024-26750 is a medium vulnerability published on April 4, 2024. In the Linux kernel, the following vulnerability has been resolved: afunix: Drop oobskb ref before purging queue in GC. syzbot reported another task hung in unix_gc(). [0] The current while loop assumes that all of the left candidates have oobskb and calling kfreeskb(oob_skb) releases the remaining…
When was CVE-2024-26750 disclosed?
CVE-2024-26750 was first published in the National Vulnerability Database on April 4, 2024, with the most recent update on March 18, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-26750 actively exploited?
CVE-2024-26750 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 86.9% of all scored CVEs.
What is the CVSS score of CVE-2024-26750?
CVE-2024-26750 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-26750?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-26750, 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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