CVE-2026-74719: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-74719DEBIAN-CVE-2026-74719
Published 22-08-2026Last modified 22-08-2026
Open JSON

Vulnerability summary

CVE-2026-74719 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.8% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.18%
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 20 · Related 19
MGASA-2026-0506OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1

Timeline

  1. 22-08-2026
    PublishedVulnerability first disclosed.

Description

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix qentry overwrite for CONFIRM_LINK and ADD_LINK_CONT in smc_llc_event_handler() The SMC_LLC_CONFIRM_LINK / SMC_LLC_ADD_LINK_CONT branch in smc_llc_event_handler() stores an incoming qentry into the local LLC flow without first checking whether a qentry is already pending. If a malicious or buggy peer sends a second CONFIRM_LINK or ADD_LINK_CONT request while a flow is active and flow->qentry is already set, smc_llc_flow_qentry_set() overwrites the pointer without freeing the previous allocation, leaking one kmalloc-96 object per spurious message. The sibling SMC_LLC_DELETE_LINK branch already has the correct !flow->qentry guard. Apply the same guard to the CONFIRM_LINK/ADD_LINK_CONT branch so that a duplicate message when qentry is already occupied falls through to break and is freed by the kfree(qentry) at the out: label, rather than silently leaking the existing allocation. The response direction (smc_llc_rx_response()) is unaffected: it already guards with flow->qentry at the equivalent site and drops duplicate responses correctly.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.18%

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

Ubuntu157 products
  • linux< 5.15.0-198.208 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1117.124 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.9-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < e384f3cba6ea709f5b2272b1770db4ce14047f78 | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < a1e980d7a9e7ee6faf4f5fd7b450413b969af26d | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < e0eb87677c76b157cdf8eb7c1f19e56227165a33 | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < 06734dfeaeba886aab1bf147249195b888ac3e4d | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < c23c409228629107203d3c3e95fff1473173f1a6 | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < 10cb31b2b74cb664c6c95cf72364d7d5c483ab82 | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < bfc336a9fbbf09805f3dfe25c195a4db90af2846 | ≥ 0fb0b02bd6fd26cba38002be4a6bbcae2228fd44, < 976245094925bab9bc39366b2e9ab44ffcde61d0 | 5.8

3 vendors · 160 products

References

18 links
Show all 18 references