5.5

CVE-2026-53048: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-53048DEBIAN-CVE-2026-53048
Published 24-06-2026Last modified 24-06-2026
Open JSON

Vulnerability summary

CVE-2026-53048 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 42 · Related 42
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1USN-8566-1

Timeline

  1. 24-06-2026
    PublishedVulnerability first disclosed.

Description

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2_log_flush() can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it missed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu154 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c3c5cfa3170c0940bc66a142859caac07d19b9d6, < cec55674354794eddb80b914f73a6bf9b7fc304a | ≥ 5f6a84cfb33b34610623857bd93919dcb661e29b, < 2fc4c868c9060f424fd4a7cacb0aec5082aba4de | ≥ 3429ef5f50909cee9e498c50f0c499b9397116ce, < 233a0945a4b1dbe3f38c30afb7d05b76c67f1193 | ≥ 35264909e9d1973ab9aaa2a1b07cda70f12bb828, < e15f16761594e80b15776980b27c35477655a135 | ≥ 35264909e9d1973ab9aaa2a1b07cda70f12bb828, < d8ffae016c4a78693fe1283335d0b6833a9c1366 | ≥ 35264909e9d1973ab9aaa2a1b07cda70f12bb828, < abd73229f0e886a91a16ea781ab656bd9b4d1ee8 | ≥ 35264909e9d1973ab9aaa2a1b07cda70f12bb828, < 74b4dbb946060a3233604d91859a9abd3708141d | f54f9d5368a4e92ede7dd078a62788dae3a7c6ef | ≥ 5.15.200, < 5.15.209 | ≥ 6.1.162, < 6.1.175 | ≥ 6.6.37, < 6.6.141 | ≥ 6.9.8, < 6.10 | 6.10
  • linux_kernel≥ 5.15.200, < 5.15.209 | ≥ 6.1.162, < 6.1.175 | ≥ 6.6.37, < 6.6.141 | ≥ 6.9.8, < 6.12.91 | ≥ 6.13, < 6.18.33 | ≥ 6.19, < 7.0.10
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.10-1

3 vendors · 157 products

References

48 links
Show all 48 references