CVE-2026-45948

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
Trending — 5 sources updated this week
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:

ext4: fix memory leak in ext4_ext_shift_extents()

In ext4_ext_shift_extents(), if the extent is NULL in the while loop, the function returns immediately without releasing the path obtained via ext4_find_extent(), leading to a memory leak.

Fix this by jumping to the out label to ensure the path is properly released.

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 16, 2026

Advisory Details (8)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ca81109d4a8f192dc1cbad4a1ee25246363c2833
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd7b52557e4a3ccd7595fdb3a585f1257de57935
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/afc5e61e1a07b2b833bd72cbee36ecce9cd901e2
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7e807cb8603b7664fa630a696cd891d9a03c248d
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4a79fde8db7eba7f1128d971ceba4e3c9ac84aec
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2f4b1052246ca646bb17bfe0f53df2fdf9729b58
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1bce219ee5512cf179ba40cf114945a14a16e21f
generic

ext4: fix memory leak in ext4_ext_shift_extents() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/12615ab4bfb69678e5d961b28bb70040299e51b1

Vendor Advisories for CVE-2026-45948(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-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-09-14ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-09-14ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-09-14ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-09-14ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-09-14ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-09-14ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-09-14ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-14ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-09-14ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-09-14ubuntu
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 (103 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 10× in last 7d / 40× 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 206 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45948?
CVE-2026-45948 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4extshift_extents() In ext4extshift_extents(), if the extent is NULL in the while loop, the function returns immediately without releasing the path obtained via ext4findextent(), leading to a memory…
When was CVE-2026-45948 disclosed?
CVE-2026-45948 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45948 actively exploited?
CVE-2026-45948 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-2026-45948?
CVE-2026-45948 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45948?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45948, 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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