7.8

CVE-2026-74647: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-74647DEBIAN-CVE-2026-74647
Published 22-08-2026Last modified 27-08-2026
Open JSON

Vulnerability summary

CVE-2026-74647 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.6% 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
0.18%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0506USN-8886-1

Timeline

  1. 22-08-2026
    PublishedVulnerability first disclosed.
  2. 27-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Remove buffer from list prior to unmap operation fastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is getting removed from the list after it is unmapped from DSP. This can create potential race conditions if multiple threads invoke unmap concurrently, where one thread may remove the entry from the list while another thread's unmap operation is still ongoing. Fix this by removing the buffer entry from the list before calling the unmap operation. If the unmap fails, the entry is re-added to the list so that userspace can retry the unmap, or alternatively, the buffer will be cleaned up during device release when the DSP process is torn down and all DSP-side mappings are freed along with remaining buffers in the list.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.05 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
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
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll 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≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 1edb654b2b41baee2ab5cf418baaf6e57dfbd802 | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 4716c23c206a2f99ca54ebfdd8b5ba9dd0102240 | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 99f8de36c84cb9b872157aa6c3578c2480cee4b8 | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 97273624f7b356eaf8261609a75cfcb8738a165a | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < fe70329055977fc1e8dc6291318d0dd75470795a | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 9bf22a7d950cec2d1efeca7f16bb20fcca84c36a | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 0beaa9bd7eb10d9b5e6352ed5161f3f3bbd4c3c5 | ≥ 2419e55e532de14fdf336e09e453aa2831c73a25, < 6102ceb4eab845743ee57acd3863fbd06e93c927 | 5.5

3 vendors · 160 products

References

12 links
Show all 12 references