CVE-2026-45848

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. 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:

apparmor: fix NULL sock in aa_sock_file_perm

Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (8)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77de
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95b
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486
generic

apparmor: fix NULL sock in aa_sock_file_perm - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297

Vendor Advisories for CVE-2026-45848(1)

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

Patch Availability(25)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-25ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1057.58~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-08-25ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-25ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-25ubuntu
linuxKernel @ 5.10.252—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 rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (100 versions)6.18.14-1—

Weakness Classification(1)

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

All Vendor Advisories

(24)

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 5× in last 7d / 68× 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 189 total refreshes for this CVE.

  1. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 01:22 UTCEPSS rescore
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-25 05:55 UTCEG score recompute
  11. 2026-08-25 05:55 UTCVendor advisory
  12. 2026-08-25 05:54 UTCGHSA enrichment
  13. 2026-08-23 15:42 UTCEG score recompute
  14. 2026-08-23 15:42 UTCVendor advisory
  15. 2026-08-23 15:42 UTCGHSA enrichment
  16. 2026-08-23 00:19 UTCEPSS rescore
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 21:02 UTCEG score recompute
  19. 2026-08-21 21:02 UTCVendor advisory
  20. 2026-08-21 21:01 UTCGHSA enrichment
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 17:47 UTCEG score recompute
  23. 2026-08-20 17:47 UTCVendor advisory
  24. 2026-08-20 17:47 UTCGHSA enrichment
  25. 2026-08-19 17:04 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 09:22 UTCEG score recompute
  4. 2026-08-17 09:22 UTCVendor advisory
  5. 2026-08-17 09:22 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 02:56 UTCEG score recompute
  8. 2026-08-16 02:56 UTCVendor advisory
  9. 2026-08-16 02:56 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 02:13 UTCEG score recompute
  12. 2026-08-15 02:13 UTCVendor advisory
  13. 2026-08-15 02:13 UTCGHSA enrichment
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 01:44 UTCEG score recompute
  16. 2026-08-14 01:44 UTCVendor advisory
  17. 2026-08-14 01:44 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-13 01:14 UTCEG score recompute
  20. 2026-08-13 01:14 UTCVendor advisory
  21. 2026-08-13 01:14 UTCGHSA enrichment
  22. 2026-08-12 13:51 UTCEPSS rescore
  23. 2026-08-12 00:45 UTCVendor advisory
  24. 2026-08-12 00:45 UTCGHSA enrichment
  25. 2026-08-11 00:15 UTCEG score recompute
  26. 2026-08-11 00:15 UTCVendor advisory
  27. 2026-08-11 00:15 UTCGHSA enrichment
  28. 2026-08-11 00:00 UTCEPSS rescore
  29. 2026-08-09 22:54 UTCEG score recompute
  30. 2026-08-09 22:54 UTCVendor advisory
  31. 2026-08-09 22:54 UTCGHSA enrichment
  32. 2026-08-09 13:46 UTCEPSS rescore
  33. 2026-08-08 22:25 UTCEG score recompute
  34. 2026-08-08 22:25 UTCVendor advisory
  35. 2026-08-08 22:25 UTCGHSA enrichment
  36. 2026-08-08 16:37 UTCEPSS rescore
  37. 2026-08-07 21:55 UTCEG score recompute
  38. 2026-08-07 21:55 UTCVendor advisory
  39. 2026-08-07 21:55 UTCGHSA enrichment
  40. 2026-08-06 21:25 UTCEG score recompute
  41. 2026-08-06 21:25 UTCVendor advisory
  42. 2026-08-06 21:25 UTCGHSA enrichment
  43. 2026-08-06 13:47 UTCEPSS rescore
  44. 2026-08-05 20:56 UTCEG score recompute
  45. 2026-08-05 20:56 UTCVendor advisory
  46. 2026-08-05 20:56 UTCGHSA enrichment
  47. 2026-08-05 19:17 UTCEPSS rescore
  48. 2026-08-04 15:10 UTCEPSS rescore
  49. 2026-08-04 10:39 UTCEPSS rescore
  50. 2026-08-03 16:48 UTCEG score recompute
  51. 2026-08-03 16:48 UTCVendor advisory
  52. 2026-08-03 16:48 UTCGHSA enrichment
  53. 2026-08-03 10:36 UTCEPSS rescore
  54. 2026-08-02 16:18 UTCEG score recompute
  55. 2026-08-02 16:18 UTCVendor advisory
  56. 2026-08-02 16:18 UTCGHSA enrichment
  57. 2026-08-02 02:27 UTCEPSS rescore
  58. 2026-08-01 15:49 UTCEG score recompute
  59. 2026-08-01 15:49 UTCVendor advisory
  60. 2026-08-01 15:49 UTCGHSA enrichment
  61. 2026-08-01 04:16 UTCEPSS rescore
  62. 2026-07-31 08:08 UTCEG score recompute
  63. 2026-07-31 08:08 UTCGHSA enrichment
  64. 2026-07-30 16:28 UTCEPSS rescore
  65. 2026-07-30 01:30 UTCEPSS rescore
  66. 2026-07-29 15:57 UTCEG score recompute
  67. 2026-07-29 15:57 UTCVendor advisory
  68. 2026-07-29 15:57 UTCGHSA enrichment
  69. 2026-07-28 15:36 UTCEPSS rescore
  70. 2026-07-27 14:13 UTCEPSS rescore
  71. 2026-07-26 14:54 UTCEPSS rescore
  72. 2026-07-26 14:54 UTCEPSS rescore
  73. 2026-07-26 06:12 UTCOSV refresh
  74. 2026-07-25 14:18 UTCEPSS rescore
  75. 2026-07-24 14:17 UTCEPSS rescore

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

Frequently asked(5)

What is CVE-2026-45848?
CVE-2026-45848 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aasockfile_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in unixneedsrevalidation shows…
When was CVE-2026-45848 disclosed?
CVE-2026-45848 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45848 actively exploited?
CVE-2026-45848 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 94.5% of all scored CVEs.
What is the CVSS score of CVE-2026-45848?
CVE-2026-45848 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45848?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45848, 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.

Dependency Blast Radius

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