5.5

CVE-2026-31646: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()

Analyzed
AliasesUBUNTU-CVE-2026-31646DEBIAN-CVE-2026-31646
Published 24-04-2026Last modified 11-05-2026

Vulnerability summary

CVE-2026-31646 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 1.9% 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
0.12%
0%100%
Low · -0.04 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 21 · Related 19
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22812-1

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() page_pool_create() can return an ERR_PTR on failure. The return value is used unconditionally in the loop that follows, passing the error pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(), which dereferences it, causing a kernel oops. Add an IS_ERR check after page_pool_create() to return early on failure.

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

Decrease -0.04 pp

From 0.16% 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.

Ubuntu130 products
  • linux< 6.8.0-136.136 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1061.64 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 11871aba19748b3387e83a2db6360aa7119e9a1a, < e63265f188ea39dcf5f546770650027528f3bd0f | ≥ 11871aba19748b3387e83a2db6360aa7119e9a1a, < 305832c53551cfbe6e5b81ca7ee765e60f4fe8e9 | ≥ 11871aba19748b3387e83a2db6360aa7119e9a1a, < b5dcb41ba891b55157006cac79825c78a32b409e | ≥ 11871aba19748b3387e83a2db6360aa7119e9a1a, < 7caf90d9ab97951a58d1de85ab7e7d7cca7a4513 | ≥ 11871aba19748b3387e83a2db6360aa7119e9a1a, < 3fd0da4fd8851a7e62d009b7db6c4a05b092bc19 | 6.2
  • linux_kernelEOL≥ 6.2.1, < 6.6.135 | ≥ 6.7, < 6.12.82 | ≥ 6.13, < 6.18.23 | ≥ 6.19, < 6.19.13 | 6.2 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.12.85-1 | < 6.19.13-1

3 vendors · 133 products

References

24 links
Show all 24 references