regmap: Fix possible double-free in regcache_rbtree_exit() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.23 % · percentile 14 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: regmap: Fix possible double-free in regcache_rbtree_exit() In regcache_rbtree_insert_to_block(), when 'present' realloc failed, the 'blk' which is supposed to assign to 'rbnode->block' will be freed, so 'rbnode->block' points a freed memory, in the error handling path of regcache_rbtree_init(), 'rbnode->block' will be freed again in regcache_rbtree_exit(), KASAN will report double-free as follows: BUG: KASAN: double-free or invalid-free in kfree+0xce/0x390 Call Trace: slab_free_freelist_hook+0x10d/0x240 kfree+0xce/0x390 regcache_rbtree_exit+0x15d/0x1a0 regcache_rbtree_init+0x224/0x2c0 regcache_init+0x88d/0x1310 __regmap_init+0x3151/0x4a80 __devm_regmap_init+0x7d/0x100 madera_spi_probe+0x10f/0x333 [madera_spi] spi_probe+0x183/0x210 really_probe+0x285/0xc30 To fix this, moving up the assignment of rbnode->block to immediately after the reallocation has succeeded so that the data structure stays valid even if the second reallocation fails.
Weaknesses (CWE)
- CWE-415 — Double Free
References
- https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999
- https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2
- https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6
- https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091
- https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596f
- https://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6
- https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047
- https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83
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-2021-34488
- GCVE · GCVE-0-2021-47483
CERT-FR advisories
- CERTFR-2025-AVI-1057 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0308 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0276 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0526 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0496 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.12 < 4.4.291cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.5 < 4.9.289cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.254cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.215cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.157cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.77cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.14.16cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc7:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < e72dce9afbdbfa70d9b44f5908a50ff6c4858999 ; affected 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < fc081477b47dfc3a6cb50a96087fc29674013fc2 ; affected 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 758ced2c3878ff789801e6fee808e185c5cf08d6 ; affected 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 3dae1a4eced3ee733d7222e69b8a55caf2d61091 ; affected 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 1cead23c1c0bc766dacb900a3b0269f651ad596f ; affected 3f4ff561bc88b074d5e868dde4012d89cbb06c87 < 36e911a16b377bde0ad91a8c679069d0d310b1a6 |
| Linux · Linux | affected 3.12 ; unaffected 0 < 3.12 ; unaffected 4.4.291 ≤ 4.4.* ; unaffected 4.9.289 ≤ 4.9.* ; unaffected 4.14.254 ≤ 4.14.* ; unaffected 4.19.215 ≤ 4.19.* |
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 |