batman-adv: dat: handle forward allocation error
Summary
| CVE | CVE-2026-52922 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-24 08:16:22 UTC |
| Updated | 2026-07-08 17:50:16 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: handle forward allocation error batadv_dat_forward_data() calls pskb_copy_for_clone() to duplicate an skb for each DHT candidate, but does not check the return value before passing it to batadv_send_skb_prepare_unicast_4addr(). That function dereferences the skb unconditionally, so a failed allocation triggers a NULL pointer dereference. Skip forwarding to the current DHT candidate on allocation failure. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.003940000 probability, percentile 0.314220000 (date 2026-07-09)
Problem Types: CWE-476
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/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 785ea1144182c341b8b85b0f8180291839d176a8 9bcebaedfb8479cb4affb23c7a0d000ca9a20e73 git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 ce0c381199402a2c58f4599f4f6ed100d872d0da git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 866ac1d57040ed0b44ca732e3c66b3aa6b93011c git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 4d420d9ee70a220a2cd95aa0dd2e15acad66a505 git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 9cceea8eeba710def2a5707ee00f00c74a9a1cac git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 cf48e75fc4fe0d5cc7721c82d454221d01367b93 git | Not specified |
| CNA | Linux | Linux | affected 785ea1144182c341b8b85b0f8180291839d176a8 2d8826a2d3657cea66fb0370f9e521575a673871 git | Not specified |
| CNA | Linux | Linux | affected 3.8 | Not specified |
| CNA | Linux | Linux | unaffected 3.8 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.142 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.92 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.34 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.11 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/ce0c381199402a2c58f4599f4f6ed100d872d0da | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/4d420d9ee70a220a2cd95aa0dd2e15acad66a505 | 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.