net: do not delay dst_entries_add() in dst_release() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.25 % · percentile 16 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: net: do not delay dst_entries_add() in dst_release() dst_entries_add() uses per-cpu data that might be freed at netns dismantle from ip6_route_net_exit() calling dst_entries_destroy() Before ip6_route_net_exit() can be called, we release all the dsts associated with this netns, via calls to dst_release(), which waits an rcu grace period before calling dst_destroy() dst_entries_add() use in dst_destroy() is racy, because dst_entries_destroy() could have been called already. Decrementing the number of dsts must happen sooner. Notes: 1) in CONFIG_XFRM case, dst_destroy() can call dst_release_immediate(child), this might also cause UAF if the child does not have DST_NOCOUNT set. IPSEC maintainers might take a look and see how to address this. 2) There is also discussion about removing this count of dst, which might happen in future kernels.
References
- https://git.kernel.org/stable/c/547087307bc19417b4f2bc85ba9664a3e8db5a6a
- https://git.kernel.org/stable/c/e3915f028b1f1c37e87542e5aadd33728c259d96
- https://git.kernel.org/stable/c/a60db84f772fc3a906c6c4072f9207579c41166f
- https://git.kernel.org/stable/c/eae7435b48ffc8e9be0ff9cfeae40af479a609dd
- https://git.kernel.org/stable/c/3c7c918ec0aa3555372c5a57f18780b7a96c5cfc
- https://git.kernel.org/stable/c/ac888d58869bb99753e7652be19a151df9ecb35d
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
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 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2024-45035
- GCVE · GCVE-0-2024-50036
CERT-FR advisories
- CERTFR-2025-AVI-0509 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0366 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0349 — 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-2025-AVI-0234 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0212 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0185 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0184 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0168 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0152 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0002 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1031 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.10.50 < 3.11cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.12.26 < 3.13cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.14.14 < 3.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.15.7 < 3.16cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.16 < 6.6.57cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.11.4cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected f88649721268999bdff09777847080a52004f691 < 547087307bc19417b4f2bc85ba9664a3e8db5a6a ; affected f88649721268999bdff09777847080a52004f691 < e3915f028b1f1c37e87542e5aadd33728c259d96 ; affected f88649721268999bdff09777847080a52004f691 < a60db84f772fc3a906c6c4072f9207579c41166f ; affected f88649721268999bdff09777847080a52004f691 < eae7435b48ffc8e9be0ff9cfeae40af479a609dd ; affected f88649721268999bdff09777847080a52004f691 < 3c7c918ec0aa3555372c5a57f18780b7a96c5cfc ; affected f88649721268999bdff09777847080a52004f691 < ac888d58869bb99753e7652be19a151df9ecb35d |
| Linux · Linux | affected 3.16 ; unaffected 0 < 3.16 ; unaffected 5.10.230 ≤ 5.10.* ; unaffected 5.15.172 ≤ 5.15.* ; unaffected 6.1.117 ≤ 6.1.* ; unaffected 6.6.57 ≤ 6.6.* |
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 |