CVE-2026-88373 Null dereference in n/a
A NULL pointer dereference in libde265 allows attackers to cause a denial of service via zero-length NAL units.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-88373?
CVE-2026-88373 is a high-severity vulnerability in n/a, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.
Weakness: CWE-476
Which versions are affected by CVE-2026-88373?
How do I fix CVE-2026-88373?
Apply the vendor's patch.
Is CVE-2026-88373 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88373 exists.
Sources
Also known as DEBIAN-CVE-2026-88373, ECHO-3c9b-ed96-0afb, GHSA-24mr-r2pj-2fq7, MGASA-2026-0552, ROOT-OS-DEBIAN-12-CVE-2026-88373, ROOT-OS-DEBIAN-13-CVE-2026-88373 and 2 more.