CVE-2023-52494: linux Out-of-bounds Write
Vulnerability summary
CVE-2023-52494 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 14 · Related 17Timeline
- 29-02-2024PublishedVulnerability first disclosed.
- 24-07-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
0.00 pp
From 0.28% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu104 products
- linux< 5.15.0-106.116
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1061.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ a1d2bd164c1c78f87968b7883964175ec41c32ae, < 76ed0c6f6418cec6efe6f65a0b91f84be80b72eb | ≥ ec32332df7645e0ba463a08d483fe97665167071, < 94991728c84f8df54fd9eec9b85855ef9057ea08 | ≥ ec32332df7645e0ba463a08d483fe97665167071, < 2df39ac8f813860f79782807c3f7acff40b3c551 | ≥ ec32332df7645e0ba463a08d483fe97665167071, < a9ebfc405fe1be145f414eafadcbf09506082010 | ≥ ec32332df7645e0ba463a08d483fe97665167071, < ecf8320111822a1ae5d5fc512953eab46d543d0b | ≥ ec32332df7645e0ba463a08d483fe97665167071, < eff9704f5332a13b08fbdbe0f84059c9e7051d5f | fd5f40fc887485a8b9a6806a640a0d8e0ef1afb6 | 76879a980cd5ede4cb9a638999fb80d37bc09db5 | ≥ 5.10.36, < 5.10.261 | ≥ 5.11.20, < 5.12 | ≥ 5.12.3, < 5.13 | 5.13
- linux_kernel≥ 5.13, < 5.15.149 | ≥ 5.16, < 6.1.76 | ≥ 6.2, < 6.6.15 | ≥ 6.7, < 6.7.3
Debian1 product
- linux< 6.1.76-1 | < 6.6.15-1
3 vendors · 107 products
