LoongArch: Add spectre boundry for syscall dispatch table
Published May 27, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.16%
Description
The LoongArch syscall number is directly controlled by userspace, but does not have a array_index_nospec() boundry to prevent access past the syscall function pointer tables.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 5.19StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<5.19
- Version 6.1.176StatusunaffectedConstraints<=6.1.*
- Version 6.12.86StatusunaffectedConstraints<=6.12.*
- Version 6.18.27StatusunaffectedConstraints<=6.18.*
- Version 6.6.140StatusunaffectedConstraints<=6.6.*
- Version 7.0.4StatusunaffectedConstraints<=7.0.*
- Version 7.1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| |||||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 5.19 · < 6.6.140
- ≥ 6.7 · < 6.12.86
- ≥ 6.13 · < 6.18.27
- ≥ 6.19 · < 7.0.4
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (12)
- https://access.redhat.com/security/cve/CVE-2026-45993 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2481991 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32289 Advisory
- https://git.kernel.org/stable/c/07040904ad217545be096d4280ed33c02f6a3750 Patch
- https://git.kernel.org/stable/c/0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d Patch
- https://git.kernel.org/stable/c/108f2cd13577a410c0ad6ea00708596d9d0dfc90 Patch
- https://git.kernel.org/stable/c/85cbf7fb568af5358aae61925c4e66b8f5e1439d Patch
- https://git.kernel.org/stable/c/bc84a109c2082dd0c4b38e8d923c046b41977533 Patch
- https://git.kernel.org/stable/c/c8a8e863928424046b8fd328f02c359baa0a0c3f
- https://lore.kernel.org/linux-cve-announce/2026052740-CVE-2026-45993-3e54@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-45993
- https://www.cve.org/CVERecord?id=CVE-2026-45993
Change history (0)
No recorded changes yet.