7.8

CVE-2026-74377: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-74377DEBIAN-CVE-2026-74377
Published 15-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74377 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.3% 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
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 24
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1SUSE-SU-2026:24181-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path For non-SRQ QPs, the responder reads WQE fields directly from the shared queue buffer mapped into userspace. This allows a malicious user to modify fields like num_sge or sge entries while the kernel is processing the WQE, leading to out-of-bounds reads in rxe_resp_check_length() and copy_data(). Introduce get_recv_wqe() that validates num_sge and copies the WQE to a kernel-local buffer before processing, matching the approach already used for SRQ WQEs in get_srq_wqe(). The srq_wqe buffer is reused since SRQ and non-SRQ paths are mutually exclusive per QP.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

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

Ubuntu168 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 8700e3e7c4857d28ebaa824509934556da0b3e76, < 2e60378fb3c8b51c94103bb40014c4fe38fa5033 | ≥ 8700e3e7c4857d28ebaa824509934556da0b3e76, < fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78 | ≥ 8700e3e7c4857d28ebaa824509934556da0b3e76, < 9fa785137303f7109c23dea779b8dedc67c9b531 | ≥ 8700e3e7c4857d28ebaa824509934556da0b3e76, < 5420eebf3b3c162bfaf965f30e61cd1d689e5732 | ≥ 8700e3e7c4857d28ebaa824509934556da0b3e76, < a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b | ≥ 8700e3e7c4857d28ebaa824509934556da0b3e76, < d6ab440240a04b8737ee4c7bb21af9182e451733 | 4.8

3 vendors · 170 products

References

19 links
Show all 19 references