5.5

CVE-2026-23019: net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

Modified
AliasesUBUNTU-CVE-2026-23019DEBIAN-CVE-2026-23019
Published 31-01-2026Last modified 15-10-2026

Vulnerability summary

CVE-2026-23019 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 30 · Related 25
DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0097MGASA-2026-0098USN-8096-1

Timeline

  1. 31-01-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix NULL dereference on devlink_alloc() failure devlink_alloc() may return NULL on allocation failure, but prestera_devlink_alloc() unconditionally calls devlink_priv() on the returned pointer. This leads to a NULL pointer dereference if devlink allocation fails. Add a check for a NULL devlink pointer and return NULL early to avoid the crash.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu144 products
  • linux< 5.15.0-173.183 | < 6.8.0-117.117 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1103.110 | < 6.8.0-1055.58 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25, < 8a4333b2818f0d853b43e139936c20659366e4a0 | ≥ 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25, < 325aea74be7e192b5c947c782da23b0d19a5fda2 | ≥ 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25, < 94e070cd50790317fba7787ae6006934b7edcb6f | ≥ 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25, < 3950054c9512add0cc79ab7e72b6d2f9f675e25b | ≥ 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25, < 326a4b7e61d01db3507f71c8bb5e85362f607064 | ≥ 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25, < a428e0da1248c353557970848994f35fd3f005e2 | 5.10
  • linux_kernel≥ 5.10.1, < 5.15.198 | ≥ 5.16, < 6.1.161 | ≥ 6.2, < 6.6.121 | ≥ 6.7, < 6.12.66 | ≥ 6.13, < 6.18.6 | 5.10 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1

3 vendors · 147 products

References

37 links
Show all 37 references