CVE-2026-74583

CVE-2026-74583: use-after-free in Linux route4 classifier A race-condition use-after-free in the Linux kernel's route4 traffic classifier net/sched/clsroute.c. When a filter was deleted while packets were being classified, the kernel could keep a pointer to the filter in a small cache and read it...

Exploit for CVE-2026-74583

CVE-2026-74583: use-after-free in Linux route4 classifier A r...

PT-2026-98623

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the cls route component of the network scheduler. The route4 change function can move an existing filter to a different top-level bucket via route4 set parms when...

UBUNTU-CVE-2026-74583

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsroute: fix fastmap use-after-free on filter The route4 classifier maintains a 16-slot fastmap cache that stores raw struct route4filter pointers indexed by id, iif. The reader route4classify populates this cache via...

CVE-2026-74583

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsroute: fix fastmap use-after-free on filter The route4 classifier maintains a 16-slot fastmap cache that stores raw struct route4filter pointers indexed by id, iif. The reader route4classify populates this cache via...

CVE-2026-74583: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsroute: fix fastmap use-after-free on filter The route4 classifier maintains a 16-slot fastmap cache that stores raw struct route4filter pointers indexed by id, iif. The reader route4classify populates this cache via...

PT-2026-79404

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free race condition exists in the cls route component of the network scheduler. The route4 classifier uses a 16-slot fastmap cache to store struct route4 filter pointers. A...

PT-2025-22222

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to the version that includes the fix for the uninit-value issue in do output route4 Description A vulnerability has been resolved in the Linux kernel related to an uninit-value issue for the saddr argument in the do...

OESA-2022-1871 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: Non-transparent sharing of return predictor targets between contexts in some IntelR Processors may allow an authorized user to potentially enable information disclosure via local access.CVE-2022-26373 A use-after-free flaw was...

PT-2022-4321

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to an error in resource management in the Linux kernel's route4 change function, which can be exploited to cause a denial of service or execute arbitrary code. The...