CVE-2024-27414
rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
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: rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back In the commit d73ef2d69c0d ("rtnetlink: let rtnl_bridge_setlink checks IFLA_BRIDGE_MODE length"), an adjustment was made to the old loop logic in the function `rtnl_bridge_setlink` to enable the loop to also check the length of the IFLA_BRIDGE_MODE attribute. However, this adjustment removed the `break` statement and led to an error logic of the flags writing back at the end of this function. if (have_flags) memcpy(nla_data(attr), &flags, sizeof(flags)); // attr should point to IFLA_BRIDGE_FLAGS NLA !!! Before the mentioned commit, the `attr` is granted to be IFLA_BRIDGE_FLAGS. However, this is not necessarily true fow now as the updated loop will let the attr point to the last NLA, even an invalid NLA which could cause overflow writes. This patch introduces a new variable `br_flag` to save the NLA pointer that points to IFLA_BRIDGE_FLAGS and uses it to resolve the mentioned error logic.
References
- https://git.kernel.org/stable/c/b9fbc44159dfc3e9a7073032752d9e03f5194a6f
- https://git.kernel.org/stable/c/882a51a10ecf24ce135d573afa0872aef02c5125
- https://git.kernel.org/stable/c/a1227b27fcccc99dc44f912b479e01a17e2d7d31
- https://git.kernel.org/stable/c/f2261eb994aa5757c1da046b78e3229a3ece0ad9
- https://git.kernel.org/stable/c/167d8642daa6a44b51de17f8ff0f584e1e762db7
- https://git.kernel.org/stable/c/831bc2728fb48a8957a824cba8c264b30dca1425
- https://git.kernel.org/stable/c/743ad091fb46e622f1b690385bb15e3cd3daf874
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.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 | 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-2024-24618
- GCVE · GCVE-0-2024-27414
CERT-FR advisories
- CERTFR-2025-AVI-0677 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0717 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0693 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0645 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0632 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0580 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0546 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0527 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4.253 < 5.4.271cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10.190 < 5.10.212cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.15.126 < 5.15.151cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.1.45 < 6.1.81cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.4.10 < 6.5cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.5.1 < 6.6.21cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.7.9cpe:2.3:o:linux:linux_kernel:6.5:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.5:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.5:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.5:rc7:*:*:*:*:*:*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:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected ad46d4861ed36315d3d9e838723ba3e367ecc042 < b9fbc44159dfc3e9a7073032752d9e03f5194a6f ; affected abb0172fa8dc4a4ec51aa992b7269ed65959f310 < 882a51a10ecf24ce135d573afa0872aef02c5125 ; affected 047508edd602921ee8bb0f2aa2100aa2e9bedc75 < a1227b27fcccc99dc44f912b479e01a17e2d7d31 ; affected 8dfac8071d58447e5cace4c4c6fe493ce2f615f6 < f2261eb994aa5757c1da046b78e3229a3ece0ad9 ; affected d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f < 167d8642daa6a44b51de17f8ff0f584e1e762db7 ; affected d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f < 831bc2728fb48a8957a824cba8c264b30dca1425 |
| Linux · Linux | affected 6.5 ; unaffected 0 < 6.5 ; unaffected 5.4.271 ≤ 5.4.* ; unaffected 5.10.212 ≤ 5.10.* ; unaffected 5.15.151 ≤ 5.15.* ; unaffected 6.1.81 ≤ 6.1.* |
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 |