Description
In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=<size>", the physical range that contains the carried over IMA measurement list may fall outside the truncated RAM leading to a kernel panic. BUG: unable to handle page fault for address: ffff97793ff47000 RIP: ima_restore_measurement_list+0xdc/0x45a #PF: error_code(0x0000) – not-present page Other architectures already validate the range with page_is_ram(), as done in commit cbf9c4b9617b ("of: check previous kernel's ima-kexec-buffer against memory bounds") do a similar check on x86. Without carrying the measurement list across kexec, the attestation would fail.
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
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < 37f18915a261afe84dab462624ed829cddb77a9baffectedb69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < 22e460b6333a5f818b042ac89201f8e735556f4aaffectedb69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < 7e2476057950c174c7b2c2802246707bbfb497e4affectedb69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < f8f73bf0f8a57ee9b86792456bd42079bc98c6b7affectedb69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < d4a132f121c591b60dbaf57ea91f1faf11631fbcaffectedb69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < 4d7a8f5f28187e3d2958b2a134473da2665207e7affectedb69a2afd5afce9bf6d56e349d6ab592c916e20f2 to < c5489d04337b47e93c0623e8145fcba3f5739efdaffected
Linux Linux
Default version status: affected
6.0affected0 to < 6.0unaffected6.1.165 to ≤ 6.1.*unaffected6.6.128 to ≤ 6.6.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.75 to ≤ 6.12.*unaffected6.18.16 to ≤ 6.18.*unaffected6.19.6 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/37f18915a261afe84dab462624ed829cddb77a9b ↗
- https://git.kernel.org/stable/c/22e460b6333a5f818b042ac89201f8e735556f4a ↗
- https://git.kernel.org/stable/c/7e2476057950c174c7b2c2802246707bbfb497e4 ↗
- https://git.kernel.org/stable/c/f8f73bf0f8a57ee9b86792456bd42079bc98c6b7 ↗
- https://git.kernel.org/stable/c/d4a132f121c591b60dbaf57ea91f1faf11631fbc ↗
- https://git.kernel.org/stable/c/4d7a8f5f28187e3d2958b2a134473da2665207e7 ↗
- https://git.kernel.org/stable/c/c5489d04337b47e93c0623e8145fcba3f5739efd ↗