net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()
Summary
| CVE | CVE-2026-31646 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-04-24 15:16:43 UTC |
| Updated | 2026-04-27 20:19:01 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.000180000 probability, percentile 0.048130000 (date 2026-04-27)
Problem Types: CWE-476
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 11871aba19748b3387e83a2db6360aa7119e9a1a e63265f188ea39dcf5f546770650027528f3bd0f git | Not specified |
| CNA | Linux | Linux | affected 11871aba19748b3387e83a2db6360aa7119e9a1a 305832c53551cfbe6e5b81ca7ee765e60f4fe8e9 git | Not specified |
| CNA | Linux | Linux | affected 11871aba19748b3387e83a2db6360aa7119e9a1a b5dcb41ba891b55157006cac79825c78a32b409e git | Not specified |
| CNA | Linux | Linux | affected 11871aba19748b3387e83a2db6360aa7119e9a1a 7caf90d9ab97951a58d1de85ab7e7d7cca7a4513 git | Not specified |
| CNA | Linux | Linux | affected 11871aba19748b3387e83a2db6360aa7119e9a1a 3fd0da4fd8851a7e62d009b7db6c4a05b092bc19 git | Not specified |
| CNA | Linux | Linux | affected 6.2 | Not specified |
| CNA | Linux | Linux | unaffected 6.2 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.135 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.82 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.23 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.13 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.