Description
In the Linux kernel, the following vulnerability has been resolved: cpu: Re-enable CPU mitigations by default for !X86 architectures Rename x86's to CPU_MITIGATIONS, define it in generic code, and force it on for all architectures exception x86. A recent commit to turn mitigations off by default if SPECULATION_MITIGATIONS=n kinda sorta missed that "cpu_mitigations" is completely generic, whereas SPECULATION_MITIGATIONS is x86-specific. Rename x86's SPECULATIVE_MITIGATIONS instead of keeping both and have it select CPU_MITIGATIONS, as having two configs for the same thing is unnecessary and confusing. This will also allow x86 to use the knob to manage mitigations that aren't strictly related to speculative execution. Use another Kconfig to communicate to common code that CPU_MITIGATIONS is already defined instead of having x86's menu depend on the common CPU_MITIGATIONS. This allows keeping a single point of contact for all of x86's mitigations, and it's not clear that other architectures *want* to allow disabling mitigations at compile-time.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
30da4180fd768973189dc364648f9c436e57b01d to < af6d6a923b40bf6471e44067ac61cc5814b48e7faffected70688450dddaf91e12fd4fc625da3297025932c9 to < 36b32816fbab267611f073223f1b0b816ec5920faffected9c09773917fbb77dff85b433e1e89123fc5fb530 to < 38f17d1fbb5bfb56ca1419e2d06376d57a9396f9affected2978ee7c973ce81b6e51100ba1e5ae001af624b9 to < 8292f4f8dd1b005d0688d726261004f816ef730aaffectedc4a9babdd5d5a41a74269a2e1aa1647b1b4c45bb to < fd8547ebc187037cc69441a15c1441aeaab80f49affectedf337a6a21e2fd67eadea471e93d05dd37baaa9be to < fe42754b94a42d08cf9501790afc25c4f6a5f631affected
Linux Linux
Default version status: unaffected
5.15.156 to < 5.15.158affected6.1.87 to < 6.1.90affected6.6.28 to < 6.6.30affected6.8.7 to < 6.8.9affected
References
- https://git.kernel.org/stable/c/af6d6a923b40bf6471e44067ac61cc5814b48e7f ↗
- https://git.kernel.org/stable/c/36b32816fbab267611f073223f1b0b816ec5920f ↗
- https://git.kernel.org/stable/c/38f17d1fbb5bfb56ca1419e2d06376d57a9396f9 ↗
- https://git.kernel.org/stable/c/8292f4f8dd1b005d0688d726261004f816ef730a ↗
- https://git.kernel.org/stable/c/fd8547ebc187037cc69441a15c1441aeaab80f49 ↗
- https://git.kernel.org/stable/c/fe42754b94a42d08cf9501790afc25c4f6a5f631 ↗
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html ↗