CVE-2026-43209
What it is
In the Linux kernel, the following vulnerability has been resolved: minix: Add required sanity checking to minix_check_superblock() The fs/minix implementation of the minix filesystem does not currently support any other value for s_log_zone_size than 0. This is also the only value supported in util-linux; see mkfs.minix.c line 511. In addition, this patch adds some sanity checking for the other minix superblock fields, and moves the minix_blocks_needed() checks for the zmap and imap also to minix_check_super_block(). This also closes a related syzbot bug report.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.252
- Linux Kernel < 5.15.202
- Linux Kernel < 6.1.165
- Linux Kernel < 6.6.128
- Linux Kernel < 6.12.75
- Linux Kernel < 6.18.16
- Linux Kernel < 6.19.6
- Linux Kernel 2.6.12
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-43209.md and follow it. Check whether this project is affected by CVE-2026-43209. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/1efc128ee4adbc23e082715425ff895449d233bc
- https://git.kernel.org/stable/c/2bb588cede1c1969e49c0a2822c8cb8b346b7682
- https://git.kernel.org/stable/c/31fefc18096cdc5549cfa54964d90e0b3229aedc
- https://git.kernel.org/stable/c/66c7c239c65341f99ae388d4d53dc9df2bcb9925
- https://git.kernel.org/stable/c/8c97a6ddc95690a938ded44b4e3202f03f15078c
- https://git.kernel.org/stable/c/a051ecf5c5b0387840dc210413ed3bc7fbdaa69c
- https://git.kernel.org/stable/c/d791c544efd6b9c944b43cf7f502e5bcb02fb941
- https://git.kernel.org/stable/c/f57ccd4657c7f082dc47e5b9e18a883bb5f9118f
References
- https://git.kernel.org/stable/c/1efc128ee4adbc23e082715425ff895449d233bc
- https://git.kernel.org/stable/c/2bb588cede1c1969e49c0a2822c8cb8b346b7682
- https://git.kernel.org/stable/c/31fefc18096cdc5549cfa54964d90e0b3229aedc
- https://git.kernel.org/stable/c/66c7c239c65341f99ae388d4d53dc9df2bcb9925
- https://git.kernel.org/stable/c/8c97a6ddc95690a938ded44b4e3202f03f15078c
- https://git.kernel.org/stable/c/a051ecf5c5b0387840dc210413ed3bc7fbdaa69c
- https://git.kernel.org/stable/c/d791c544efd6b9c944b43cf7f502e5bcb02fb941
- https://git.kernel.org/stable/c/f57ccd4657c7f082dc47e5b9e18a883bb5f9118f