CVE-2026-43384
What it is
In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.5% 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
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 6.12.78
- Linux Kernel < 6.18.19
- Linux Kernel < 6.19.9
- Linux Kernel 7.0
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fix and advisories
- https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe
- https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc
- https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125
- https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c