7.8

CVE-2024-26712: debian debian_linux

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2024-26712DEBIAN-CVE-2024-26712
Published 03-04-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2024-26712 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 15 · Related 12
DLA-3842-1DSA-5681-1RHSA-2024:9315USN-6766-1USN-6766-2USN-6766-3

Timeline

  1. 03-04-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/kasan: Fix addr error caused by page alignment In kasan_init_region, when k_start is not page aligned, at the begin of for loop, k_cur = k_start & PAGE_MASK is less than k_start, and then `va = block + k_cur - k_start` is less than block, the addr va is invalid, because the memory address space from va to block is not alloced by memblock_alloc, which will not be reserved by memblock_reserve later, it will be used by other places. As a result, memory overwriting occurs. for example: int __init __weak kasan_init_region(void *start, size_t size) { [...] /* if say block(dcd97000) k_start(feef7400) k_end(feeff3fe) */ block = memblock_alloc(k_end - k_start, PAGE_SIZE); [...] for (k_cur = k_start & PAGE_MASK; k_cur < k_end; k_cur += PAGE_SIZE) { /* at the begin of for loop * block(dcd97000) va(dcd96c00) k_cur(feef7000) k_start(feef7400) * va(dcd96c00) is less than block(dcd97000), va is invalid */ void *va = block + k_cur - k_start; [...] } [...] } Therefore, page alignment is performed on k_start before memblock_alloc() to ensure the validity of the VA address.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

+0.02 pp

From 0.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu112 products
  • linux< 5.4.0-186.206 | < 5.15.0-106.116
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1126.136 | < 5.15.0-1061.67
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
Linux2 products
  • linux≥ 663c0c9496a69f80011205ba3194049bcafd681d, < 230e89b5ad0a33f530a2a976b3e5e4385cb27882 | ≥ 663c0c9496a69f80011205ba3194049bcafd681d, < 2738e0aa2fb24a7ab9c878d912dc2b239738c6c6 | ≥ 663c0c9496a69f80011205ba3194049bcafd681d, < 0c09912dd8387e228afcc5e34ac5d79b1e3a1058 | ≥ 663c0c9496a69f80011205ba3194049bcafd681d, < 0516c06b19dc64807c10e01bb99b552bdf2d7dbe | ≥ 663c0c9496a69f80011205ba3194049bcafd681d, < 70ef2ba1f4286b2b73675aeb424b590c92d57b25 | ≥ 663c0c9496a69f80011205ba3194049bcafd681d, < 4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0 | 5ce93076d8ee2a0fac3ad4adbd2e91b6197146db | ≥ 5.3.6, < 5.4 | 5.4
  • linux_kernel≥ 5.4, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.79 | ≥ 6.2, < 6.6.18 | ≥ 6.7, < 6.7.6 | 6.8:rc1 | 6.8:rc2 | 6.8:rc3 | 6.8:rc4

3 vendors · 116 products

References

23 links
Show all 23 references