CVE-2026-43370: linux Use After Free
CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-43370DEBIAN-CVE-2026-43370
Published 08-05-2026Last modified 19-10-2026
Vulnerability summary
CVE-2026-43370 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 45 · Related 40LSN-0122-1OPENSUSE-SU-2026:21555-1RHSA-2026:67150RHSA-2026:67471RHSA-2026:71016RHSA-2026:71213SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1SUSE-SU-2026:23231-1SUSE-SU-2026:23237-1SUSE-SU-2026:23241-1SUSE-SU-2026:23244-1SUSE-SU-2026:3130-1SUSE-SU-2026:3166-1SUSE-SU-2026:3594-1USN-8567-1USN-8574-1USN-8574-2USN-8574-3USN-8575-1USN-8575-2USN-8575-3USN-8576-1USN-8576-2USN-8595-1USN-8595-2USN-8595-3USN-8596-1USN-8597-1USN-8606-1USN-8607-1USN-8608-1USN-8609-1USN-8610-1USN-8619-1USN-8620-1USN-8620-2USN-8620-3USN-8620-4USN-8665-1USN-8668-1USN-8668-2
Timeline
- 08-05-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix use-after-free race in VM acquire Replace non-atomic vm->process_info assignment with cmpxchg() to prevent race when parent/child processes sharing a drm_file both try to acquire the same VM after fork(). (cherry picked from commit c7c573275ec20db05be769288a3e3bb2250ec618)
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.3Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesSingle source
High 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 19-09-2026
19-09-202619-10-2026
EPSS score0.13%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Affected systems
Ubuntu153 products
- linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < ae87aea330c24f462fc7058ed543ba8bc6798447 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < 46d309996bd9251792d7dafdbaf615cf202b4447 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < e61e355cbe49e585097eee28c15b862bfb1c0668 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < c658c1c85ec235b7ecfbf8dbfee385b1332088f4 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < 904025fa8bba1d028adade33346372b4ac1a9249 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < 7885eb335d8f9e9942925d57e300a85e3f82ded4 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < 94b7782d0c8024f5b88454241c8d4777076c3786 | ≥ ede0dd86f45adf2b7083bb161f6bc81da5fe2bad, < 2c1030f2e84885cc58bffef6af67d5b9d2e7098f | 4.17
- linux_kernel≥ 4.17, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.78 | ≥ 6.13, < 6.18.19 | ≥ 6.19, < 6.19.9 | 7.0:rc1 | 7.0:rc2
Debian1 product
- linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.10-1
3 vendors · 156 products
