CVEvulnerability
CVE-2026-31483
5.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-22
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
Affected configurations
• linux linux kernel (>= 5.12.1 < 5.15.203)
• linux linux kernel (>= 5.16 < 6.1.168)
• linux linux kernel (>= 6.2 < 6.6.131)
• linux linux kernel (>= 6.7 < 6.12.80)
• linux linux kernel (>= 6.13 < 6.18.21)
• linux linux kernel (>= 6.19 < 6.19.11)
• linux linux kernel 5.12
• linux linux kernel 7.0
References
- https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310 Patch
- https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333 Patch
- https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbd Patch
- https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256 Patch
- https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0 Patch
- https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3 Patch
- https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4 Patch