7.8

CVE-2026-43206: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()

Modified
AliasesUBUNTU-CVE-2026-43206DEBIAN-CVE-2026-43206ALPINE-CVE-2026-43206
Published 06-05-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-43206 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 125 · Related 120
LSN-0122-1OPENSUSE-SU-2026:21555-1RHSA-2026:55764RHSA-2026:55765RHSA-2026:57251RHSA-2026:57252

Showing 100 of 125.

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() The kfd_event_page_set() function writes KFD_SIGNAL_EVENT_LIMIT * 8 bytes via memset without checking the buffer size parameter. This allows unprivileged userspace to trigger an out-of bounds kernel memory write by passing a small buffer, leading to potential privilege escalation.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.14% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < 3e04bc310d80b46eaf481f1fefcbcb37a187412d | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < b4034442cb090e4a980bdcc1540948606cbc951b | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < 4857c37c7ba9aa38b9a4c694e8bd8d0091c87940 | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < 75fb57efdd7863fffbc39db23e9cad7aafda26ed | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < 4e72f419e4ed44cb3b60506752d8688c20a60a9b | ≥ 0fc8011f89feb8b2c3008583b777d097e1974660, < 8a70a26c9f34baea6c3199a9862ddaff4554a96d | 4.17
  • linux_kernel≥ 4.17, < 5.10.252 | ≥ 5.11, < 5.15.202 | ≥ 5.16, < 6.1.165 | ≥ 6.2, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6
Alpine1 product
  • docker< 29.5.1-r0
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.6-1

4 vendors · 157 products

References

38 links
Show all 38 references