CVE-2021-33033
High
Description
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMay 14, 2021
First seenMay 14, 2021
How to fix
Update
- linux linux_kernel4.9.298, 4.14.226, 4.19.181, 5.4.106, 5.10.24, 5.11.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.28 ≤ v < 4.9.298, 4.10 ≤ v < 4.14.226, 4.15 ≤ v < 4.19.181, 4.20 ≤ v < 5.4.106, 5.5 ≤ v < 5.10.24, 5.11 ≤ v < 5.11.7 | 4.9.298, 4.14.226, 4.19.181, 5.4.106, 5.10.24, 5.11.7 |
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