CVE-2026-22984 libceph: prevent potential out-of-bounds reads in handle_auth_done()
An out-of-bounds read in the Linux kernel's libceph module allows attackers to cause denial of service or disclose sensitive memory contents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-22984?
CVE-2026-22984 is a critical memory corruption vulnerability in Linux kernel, published on 23 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
libceph: prevent potential out-of-bounds reads in handle_auth_done()
Perform an explicit bounds check on payload_len to avoid a possible out-of-bounds access in the callout.
[ idryomov: changelog ]
Weakness: CWE-125
Which versions are affected by CVE-2026-22984?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-22984?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-22984 being exploited?
There is no known exploitation of CVE-2026-22984 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-78464, BELL-CVE-2026-22984, DEBIAN-CVE-2026-22984, GHSA-5rpf-hqpr-28r8, ROOT-OS-DEBIAN-12-CVE-2026-22984, ROOT-OS-DEBIAN-13-CVE-2026-22984 and 3 more.