CVE-2022-48747: block: Fix wrong offset in bio_truncate()
Vulnerability summary
CVE-2022-48747 is a high (CVSS 7.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 60.2% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 20-06-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: block: Fix wrong offset in bio_truncate() bio_truncate() clears the buffer outside of last block of bdev, however current bio_truncate() is using the wrong offset of page. So it can return the uninitialized data. This happened when both of truncated/corrupted FS and userspace (via bdev) are trying to read the last of bdev.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.92%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.92% 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 causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu90 products
- linuxAll versions (No fix recorded) | < 5.4.0-109.123
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1072.77
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 943cd69efac437d82a7aea0659fccbcc071730de, < 6cbf4c731d7812518cd857c2cfc3da9fd120f6ae | ≥ 85a8ce62c2eabe28b9d76ca4eecf37922402df93, < b63e120189fd92aff00096d11e2fc5253f60248b | ≥ 85a8ce62c2eabe28b9d76ca4eecf37922402df93, < 4633a79ff8bc82770486a063a08b55e5162521d8 | ≥ 85a8ce62c2eabe28b9d76ca4eecf37922402df93, < 941d5180c430ce5b0f7a3622ef9b76077bfa3d82 | ≥ 85a8ce62c2eabe28b9d76ca4eecf37922402df93, < 3ee859e384d453d6ac68bfd5971f630d9fa46ad3 | ≥ 5.4.9, < 5.4.176 | 5.5
- linux_kernel< 5.4.176 | ≥ 5.5, < 5.10.96 | ≥ 5.11, < 5.15.19 | ≥ 5.16, < 5.16.5
Debian1 product
- linux< 5.16.7-1
3 vendors · 93 products
