CVE-2026-98281

Summary

In the Linux kernel, the following vulnerability has been resolved:

futex: Also allocate private hash on vfork()

As Jann demonstrated, it is entirely feasible to access the mm through vfork(). Therefore we need to allocate a private hash on vfork() as well as any other CLONE_VM user.

Specifically, it must be avoided to have (private) futex waiters before allocating the private hash.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1dcd36420af2da5bd59306dba9caf78e3d248b1d < 5468a4855b63b30156a79e5248e01bf1a2c18dd7affected
LinuxLinuxee9dce44362b2d8132c32964656ab6dff7dfbc6a < eecbafa8cabbc4d1482f6a5e2acc25a8f934681baffected
LinuxLinuxee9dce44362b2d8132c32964656ab6dff7dfbc6a < b61b6f95d6722ddbbbd09e689fa41b55fd36f9a5affected
LinuxLinux974ac49a9a068b0591a59f65c63eb06579a13091affected
LinuxLinux6.18.33 < 6.18.54affected
LinuxLinux7.0.10 < 7.1affected
LinuxLinux7.1affected
LinuxLinux0 < 7.1unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References