CVE-2026-52922
Analyzed
Analyzed - Analysis Complete
batman-adv: DAT Forward Allocation Failure Handling
Vulnerability report for CVE-2026-52922, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-06-24
Last updated on: 2026-07-08
Assigner: kernel.org
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | From 5.16 (inc) to 6.1.175 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.209 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.92 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.34 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 7.0.11 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.142 (exc) |
| linux | linux_kernel | From 3.8 (inc) to 5.10.258 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
