CVE-2026-31483
In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent…
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310Patch
- https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333Patch
- https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbdPatch
- https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256Patch
- https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0Patch
- https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3Patch
- https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.