CVE-2024-26855: net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink()
First published: Wed Apr 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink() The function ice_bridge_setlink() may encounter a NULL pointer dereference if nlmsg_find_attr() returns NULL and br_spec is dereferenced subsequently in nla_for_each_nested(). To address this issue, add a check to ensure that br_spec is not NULL before proceeding with the nested attribute iteration.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.4.272 | 5.4.272 |
| redhat/kernel | <5.10.213 | 5.10.213 |
| redhat/kernel | <5.15.152 | 5.15.152 |
| redhat/kernel | <6.1.82 | 6.1.82 |
| redhat/kernel | <6.6.22 | 6.6.22 |
| redhat/kernel | <6.7.10 | 6.7.10 |
| redhat/kernel | <6.8 | 6.8 |
| Linux kernel | >=4.20<5.4.272 | |
| Linux kernel | >=5.5<5.10.213 | |
| Linux kernel | >=5.11<5.15.152 | |
| Linux kernel | >=5.16<6.1.82 | |
| Linux kernel | >=6.2<6.6.22 | |
| Linux kernel | >=6.7<6.7.10 | |
| Linux kernel | =6.8-rc1 | |
| Linux kernel | =6.8-rc2 | |
| Linux kernel | =6.8-rc3 | |
| Linux kernel | =6.8-rc4 | |
| Linux kernel | =6.8-rc5 | |
| Linux kernel | =6.8-rc6 | |
| Debian | =10.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/stable/c/06e456a05d669ca30b224b8ed962421770c1496c
- https://git.kernel.org/stable/c/0e296067ae0d74a10b4933601f9aa9f0ec8f157f
- https://git.kernel.org/stable/c/1a770927dc1d642b22417c3e668c871689fc58b3
- https://git.kernel.org/stable/c/37fe99016b12d32100ce670216816dba6c48b309
- https://git.kernel.org/stable/c/8d95465d9a424200485792858c5b3be54658ce19
- https://git.kernel.org/stable/c/afdd29726a6de4ba27cd15590661424c888dc596
- https://git.kernel.org/stable/c/d9fefc51133107e59d192d773be86c1150cfeebb
- https://launchpad.net/bugs/cve/CVE-2024-26855
- https://access.redhat.com/security/cve/CVE-2024-26855
- https://lore.kernel.org/linux-cve-announce/2024041724-CVE-2024-26855-ac0d@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2275743
- https://access.redhat.com/errata/RHSA-2024:5365
- https://access.redhat.com/errata/RHSA-2024:5364
- https://access.redhat.com/errata/RHSA-2024:5928
- https://access.redhat.com/errata/RHSA-2024:7001
- https://access.redhat.com/errata/RHSA-2024:7000
- https://bugzilla.redhat.com/show_bug.cgi?id=2275742
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26855
- https://nvd.nist.gov/vuln/detail/CVE-2024-26855
- https://security-tracker.debian.org/tracker/CVE-2024-26855
- https://ubuntu.com/security/CVE-2024-26855
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://git.kernel.org/linus/06e456a05d669ca30b224b8ed962421770c1496c
Frequently Asked Questions
What is the severity of CVE-2024-26855?
CVE-2024-26855 has a medium severity level due to the potential for a NULL pointer dereference in the Linux kernel.
How do I fix CVE-2024-26855?
To address CVE-2024-26855, update the Linux kernel to version 5.4.272, 5.10.213, 5.15.152, 6.1.82, 6.6.22, 6.7.10, or 6.8.
What versions of the Linux kernel are vulnerable to CVE-2024-26855?
Versions of the Linux kernel prior to 5.4.272, 5.10.213, 5.15.152, 6.1.82, 6.6.22, 6.7.10, and 6.8 are vulnerable to CVE-2024-26855.
Which Linux distributions are affected by CVE-2024-26855?
CVE-2024-26855 affects various Linux distributions using vulnerable kernel versions, including those from Red Hat and Debian.
What specific function is impacted by CVE-2024-26855?
The ice_bridge_setlink() function is impacted by the potential NULL pointer dereference as outlined in CVE-2024-26855.
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