drm/komeda: fix integer overflow in AFBC framebuffer size check
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/komeda: fix integer overflow in AFBC framebuffer size check The AFBC framebuffer size validation calculates the minimum required buffer size by adding the AFBC payload size to the framebuffer offset. This addition is performed without checking for integer overflow. If the addition oveflows, the size check may incorrectly succed and allow userspace to provide an undersized drm_gem_object, potentially leading to out-of-bounds memory access. Add usage of check_add_overflow() to safely compute the minimum required size and reject the framebuffer if an overflow is detected. This makes the AFBC size validation more robust against malformed. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.3
References 8
git.kernel.org
- stable/c/a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7
- stable/c/e27b58095d7d3ac72f230e318838dee956258460
- stable/c/02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583
- stable/c/d8a541906860aa3519b1874780d933c766918a7c
- stable/c/8165e8b28fdf392c2c7412518d602b4f193812a8
- stable/c/fe1f80f8f6e8611ac6349b9d464e8750443390cf
- stable/c/872d923b852705054bc099af663da862fdc1097d
- stable/c/779ec12c85c9e4547519e3903a371a3b26a289de