CVE-2024-26946: kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address
Vulnerability summary
CVE-2024-26946 is a medium (CVSS 5.5) Reachable Assertion vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.2% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 10Timeline
- 01-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: kprobes/x86: Use copy_from_kernel_nofault() to read from unsafe address Read from an unsafe address with copy_from_kernel_nofault() in arch_adjust_kprobe_addr() because this function is used before checking the address is in text or not. Syzcaller bot found a bug and reported the case if user specifies inaccessible data area, arch_adjust_kprobe_addr() will cause a kernel panic. [ mingo: Clarified the comment. ]
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu82 products
- linux< 6.8.0-35.35
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ cc66bb91457827f62e2b6cb2518666820f0a6c48, < 6417684315087904fffe8966d27ca74398c57dd6 | ≥ cc66bb91457827f62e2b6cb2518666820f0a6c48, < f13edd1871d4fb4ab829aff629d47914e251bae3 | ≥ cc66bb91457827f62e2b6cb2518666820f0a6c48, < 20fdb21eabaeb8f78f8f701f56d14ea0836ec861 | ≥ cc66bb91457827f62e2b6cb2518666820f0a6c48, < b69f577308f1070004cafac106dd1a44099e5483 | ≥ cc66bb91457827f62e2b6cb2518666820f0a6c48, < 4e51653d5d871f40f1bd5cf95cc7f2d8b33d063b | 5.18
- linux_kernel≥ 5.18, < 6.1.84 | ≥ 6.2, < 6.6.24 | ≥ 6.7, < 6.7.12 | ≥ 6.8, < 6.8.3
Debian1 product
- linux< 6.1.85-1 | < 6.7.12-1
3 vendors · 85 products
