CVE-2023-52626: net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context
Vulnerability summary
CVE-2023-52626 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.7% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 9Timeline
- 26-03-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context Indirection (*) is of lower precedence than postfix increment (++). Logic in napi_poll context would cause an out-of-bound read by first increment the pointer address by byte address space and then dereference the value. Rather, the intended logic was to dereference first and then increment the underlying value.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.
Ubuntu75 products
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19All versions (No fix recorded)
Linux2 products
- linux≥ e5d30f7da35720060299483e65fc372980a82dfb, < 40e0d0746390c5b0c31144f4f1688d72f3f8d790 | ≥ 92214be5979c0961a471b7eaaaeacab41bdf456c, < 33cdeae8c6fb58cc445f859b67c014dc9f60b4e0 | ≥ 92214be5979c0961a471b7eaaaeacab41bdf456c, < 3876638b2c7ebb2c9d181de1191db0de8cac143a | 42b11d1293e5a0f932c0b6e891b2c7bae57b839d | ≥ 6.6.3, < 6.6.15 | ≥ 6.5.13, < 6.6 | 6.7
- linux_kernel≥ 6.6.3, < 6.6.15 | ≥ 6.7, < 6.7.3 | 6.8:rc1
Debian1 product
- linux< 6.6.15-1
3 vendors · 78 products
