CVE-2026-63841: linux Improper Input Validation
CVSS: 7.8v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-63841DEBIAN-CVE-2026-63841
Published 19-07-2026Last modified 19-10-2026
Vulnerability summary
CVE-2026-63841 is a high (CVSS 7.8) Improper Input Validation vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.3% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.17%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 19-07-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set no_user_fence for JPEG v5.0.1 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit 742a98e2e81702df8fe1b1eccee5223220a03dc2)
CVSS metrics
4 scores · 4 sources · 1 versionHigh 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
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
+0.03 pp
From 0.14% on 19-09-2026
19-09-202619-10-2026
EPSS score0.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu118 products
- linux< 7.0.0-28.28
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 7.0.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 7.0.10-1
Linux1 product
- linux≥ b8f57b69942b2faa7deee0566cc9306316fe0a74, < d0f6ae14c0452be4fc3aa5cf81c74e68b3243050 | ≥ b8f57b69942b2faa7deee0566cc9306316fe0a74, < 869ce148c0d953570f8307c3e206b47bd5d3be99 | ≥ b8f57b69942b2faa7deee0566cc9306316fe0a74, < 2f8e3da71a1b469b6e157aa3972f1448b3157840 | 6.14
3 vendors · 120 products
