btrfs: fix double free in create_space_info_sub_group() error path (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.14 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in create_space_info_sub_group() error path When kobject_init_and_add() fails, the call chain is: create_space_info_sub_group() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&sub_group->kobj) -> space_info_release() -> kfree(sub_group) Then control returns to create_space_info_sub_group(), where: btrfs_sysfs_add_space_info_type() returns error -> kfree(sub_group) Thus, sub_group is freed twice. Keep parent->sub_group[index] = NULL for the failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.
Weaknesses (CWE)
- CWE-415 — Double Free
References
- https://git.kernel.org/stable/c/c2d59527cba6d59f0d77a75c1101ab4e69758bea
- https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21
- https://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf
- https://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1
- https://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd
- https://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-32791
- GCVE · GCVE-0-2026-46164
CERT-FR advisories
- CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0862 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0731 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.1.162 < 6.2cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.6.122 < 6.6.141cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.12.67 < 6.12.90cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.16 < 6.18.32cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 7.0.7
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 64c7ddda83acfbaa0efb381a1928ce908c584607 < c2d59527cba6d59f0d77a75c1101ab4e69758bea ; affected 0bd151ce4200ca847990e05cca29a76456982ca5 < d2a675f2e238ec96c8e91e2718c1f910c9c8fb21 ; affected 190d5a7c4fe42b8c9aa46e3336389e7cb10395bb < 14b22be1dd844383eb03af9b1ee3b6b25d32aeaf ; affected f92ee31e031c7819126d2febdda0c3e91f5d2eb9 < dfd05a16b5c9d1d98b47905f37f2fccda52173d1 ; affected f92ee31e031c7819126d2febdda0c3e91f5d2eb9 < 259af6857a1b4f1e9ef8b780353f9d11c26a22bd ; affected f92ee31e031c7819126d2febdda0c3e91f5d2eb9 < a7449edf96143f192606ec8647e3167e1ecbd728 |
| Linux · Linux | affected 6.16 ; unaffected 0 < 6.16 ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.141 ≤ 6.6.* ; unaffected 6.12.90 ≤ 6.12.* ; unaffected 6.18.32 ≤ 6.18.* |
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 |