loop: Fix use-after-free issues (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: loop: Fix use-after-free issues do_req_filebacked() calls blk_mq_complete_request() synchronously or asynchronously when using asynchronous I/O unless memory allocation fails. Hence, modify loop_handle_cmd() such that it does not dereference 'cmd' nor 'rq' after do_req_filebacked() finished unless we are sure that the request has not yet been completed. This patch fixes the following kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000054 Call trace: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558 worker_thread+0x400/0x8fc kthread+0x16c/0x1e0 ret_from_fork+0x10/0x20
Weaknesses (CWE)
- CWE-416 — Use After Free
References
- https://git.kernel.org/stable/c/81bf9d78fa246a166619196ff5005430ed2bc7c2
- https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f
- https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada
- https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c
- https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2025-13142
- GCVE · GCVE-0-2023-53111
CERT-FR advisories
- CERTFR-2026-AVI-0081 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1009 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0587 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0560 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0529 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0509 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.4 < 5.15.104cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.21cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.2.8cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6 < 81bf9d78fa246a166619196ff5005430ed2bc7c2 ; affected bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6 < 407badf73ec9fb0d5744bf2ca1745c1818aa222f ; affected bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6 < e3fda704903f6d1fc351412f1bc6620333959ada ; affected bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6 < 6917395c4667cfb607ed8bf1826205a59414657c ; affected bc07c10a3603a5ab3ef01ba42b3d41f9ac63d1b6 < 9b0cb770f5d7b1ff40bea7ca385438ee94570eec |
| Linux · Linux | affected 4.4 ; unaffected 0 < 4.4 ; unaffected 5.10.273 ≤ 5.10.* ; unaffected 5.15.104 ≤ 5.15.* ; unaffected 6.1.21 ≤ 6.1.* ; unaffected 6.2.8 ≤ 6.2.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |