Critical 9.8Published Jan 23, 2026

CVE-2026-22984libceph: prevent potential out-of-bounds reads in handle_auth_done()

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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 ]

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from cd1a677cad994021b19665ed476aea63f5d54f31 before 194cfe2af4d2a1de599d39dad636b47c2f6c2c96; from cd1a677cad994021b19665ed476aea63f5d54f31 before 79fe3511db416d2f2edcfd93569807cb02736e5e; from cd1a677cad994021b19665ed476aea63f5d54f31 before ef208ea331ef688729f64089b895ed1b49e842e3; from cd1a677cad994021b19665ed476aea63f5d54f31 before 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2; from cd1a677cad994021b19665ed476aea63f5d54f31 before 2d653bb63d598ae4b096dd678744bdcc34ee89e8; from cd1a677cad994021b19665ed476aea63f5d54f31 before 818156caffbf55cb4d368f9c3cac64e458fb49c9	CNA record
linux linux_kernel linux:linux_kernel	from 5.11 before 5.15.198; from 5.16 before 6.1.161; from 6.2 before 6.6.121; from 6.7 before 6.12.66; from 6.13 before 6.18.6; 6.19; 6.19; 6.19; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/194cfe2af4d2a1de599d39dad636b47c2f6c2c96	patch
https://git.kernel.org/stable/c/79fe3511db416d2f2edcfd93569807cb02736e5e	patch
https://git.kernel.org/stable/c/ef208ea331ef688729f64089b895ed1b49e842e3	patch
https://git.kernel.org/stable/c/2802ef3380fa8c4a08cda51ec1f085b1a712e9e2	patch
https://git.kernel.org/stable/c/2d653bb63d598ae4b096dd678744bdcc34ee89e8	patch
https://git.kernel.org/stable/c/818156caffbf55cb4d368f9c3cac64e458fb49c9	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.