CVE-2026-22984: libceph: prevent potential out-of-bounds reads in handle_auth_done()
Vulnerability summary
CVE-2026-22984 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35% of scored vulnerabilities.
Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 50 · Related 39Timeline
- 23-01-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
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 ]
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
EPSS trend
Probability
0.41%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 0.39% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu144 products
- linux< 5.15.0-173.183 | < 6.8.0-117.117 | < 6.17.0-40.40
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1103.110 | < 6.8.0-1055.58 | < 6.17.0-1019.19
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ cd1a677cad994021b19665ed476aea63f5d54f31, < 194cfe2af4d2a1de599d39dad636b47c2f6c2c96 | ≥ cd1a677cad994021b19665ed476aea63f5d54f31, < 79fe3511db416d2f2edcfd93569807cb02736e5e | ≥ cd1a677cad994021b19665ed476aea63f5d54f31, < ef208ea331ef688729f64089b895ed1b49e842e3 | ≥ cd1a677cad994021b19665ed476aea63f5d54f31, < 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2 | ≥ cd1a677cad994021b19665ed476aea63f5d54f31, < 2d653bb63d598ae4b096dd678744bdcc34ee89e8 | ≥ cd1a677cad994021b19665ed476aea63f5d54f31, < 818156caffbf55cb4d368f9c3cac64e458fb49c9 | 5.11
- linux_kernel≥ 5.11, < 5.15.198 | ≥ 5.16, < 6.1.161 | ≥ 6.2, < 6.6.121 | ≥ 6.7, < 6.12.66 | ≥ 6.13, < 6.18.6 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4
Debian1 product
- linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1
3 vendors · 147 products
