CVE-2022-48946: udf: Fix preallocation discarding at indirect extent boundary
Vulnerability summary
CVE-2022-48946 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 17% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: udf: Fix preallocation discarding at indirect extent boundary When preallocation extent is the first one in the extent block, the code would corrupt extent tree header instead. Fix the problem and use udf_delete_aext() for deleting extent to avoid some code duplication.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.25% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu114 products
- linuxAll versions (No fix recorded) | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-67.74
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1031.35
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c8b6fa4511a7900db9fb0353b630d4d2ed1ba99c | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7665857f88557c372da35534165721156756f77f | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 72f651c96c8aadf087fd782d551bf7db648a8c2e | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4d835efd561dfb9bf5409f11f4ecd428d5d29226 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1a075f4a549481ce6e8518d8379f193ccec6b746 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 63dbbd8f1499b0a161e701a04aa50148d60bd1f7 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ae56d9a017724f130cf1a263dd82a78d2a6e3852 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 12a88f572d6d94b5c0b72e2d1782cc2e96ac06cf | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < cfe4c1b25dd6d2f056afc00b7c98bcb3dd0b1fc3 | 2.6.12
- linux_kernelEOL< 4.9.337 | ≥ 4.10, < 4.14.303 | ≥ 4.15, < 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.161 | ≥ 5.11, < 5.15.85 | ≥ 5.16, < 6.0.15 | 6.1 | 6.11
Debian1 product
- linux< 6.1.4-1
3 vendors · 117 products
