mm: zswap: fix missing folio cleanup in writeback race path (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 13 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: mm: zswap: fix missing folio cleanup in writeback race path In zswap_writeback_entry(), after we get a folio from __read_swap_cache_async(), we grab the tree lock again to check that the swap entry was not invalidated and recycled. If it was, we delete the folio we just added to the swap cache and exit. However, __read_swap_cache_async() returns the folio locked when it is newly allocated, which is always true for this path, and the folio is ref'd. Make sure to unlock and put the folio before returning. This was discovered by code inspection, probably because this path handles a race condition that should not happen often, and the bug would not crash the system, it will only strand the folio indefinitely.
Weaknesses (CWE)
- CWE-459 — Incomplete Cleanup
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2024-24094
- GCVE · GCVE-0-2024-26832
CERT-FR advisories
- CERTFR-2026-AVI-0398 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0225 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0195 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0170 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0717 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0526 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.1.30 < 6.1.80cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.4 < 6.6.19cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.7.7cpe:2.3:o:linux:linux_kernel:6.3.4:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 2cab13f500a6333bd2b853783ac76be9e4956f8a < 14f1992430ef9e647b02aa8ca12c5bcb9a1dffea ; affected 04fc7816089c5a32c29a04ec94b998e219dfb946 < 6156277d1b26cb3fdb6fcbf0686ab78268571644 ; affected 04fc7816089c5a32c29a04ec94b998e219dfb946 < e2891c763aa2cff74dd6b5e978411ccf0cf94abe ; affected 04fc7816089c5a32c29a04ec94b998e219dfb946 < e3b63e966cac0bf78aaa1efede1827a252815a1d ; affected ba700ea13bf0105a4773c654f7d3bef8adb64ab2 ; affected 6.1.30 < 6.1.80 |
| Linux · Linux | affected 6.4 ; unaffected 0 < 6.4 ; unaffected 6.1.80 ≤ 6.1.* ; unaffected 6.6.19 ≤ 6.6.* ; unaffected 6.7.7 ≤ 6.7.* ; unaffected 6.8 ≤ * |
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 |