GHSA-pjv2-crr6-xm2pMediumCVSS 7.8
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2021-33033
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08
- https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt
- https://syzkaller.appspot.com/bug?id=96e7d345748d8814901c91cd92084ed04b46701e
- https://github.com/advisories/GHSA-pjv2-crr6-xm2p