CVE-2025-38405: nvmet: fix memory leak of bio integrity
Vulnerability summary
CVE-2025-38405 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 37.1% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 29 · Related 27Timeline
- 25-07-2025PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak of bio integrity If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-128 slab or more precisely bio->bi_integrity. Since commit bf4c89fc8797 ("block: don't call bio_uninit from bio_endio") each user of bio_init has to use bio_uninit as well. Otherwise the bio integrity is not getting free. Nvmet uses bio_init for inline bios. Uninit the inline bio to complete deallocation of integrity in bio.
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: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:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.43%
Chance of exploitation in the next 30 days
Percentile
37%
Versus all other CVEs
30-day change
Increase +0.05 pp
From 0.38% 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.
Ubuntu120 products
- linux< 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f, < 431e58d56fcb5ff1f9eb630724a922e0d2a941df | ≥ bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f, < 2e2028fcf924d1c6df017033c8d6e28b735a0508 | ≥ bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f, < 190f4c2c863af7cc5bb354b70e0805f06419c038 | 64149da0fddbbfe43e11c0348d8c8b4171dae3a2 | ≥ 6.10.10, < 6.11 | 6.11
- linux_kernel≥ 6.10.10, < 6.12.37 | ≥ 6.13, < 6.15.6 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4
Debian1 product
- linux< 6.12.37-1
3 vendors · 123 products
