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.
Product status
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 (git) before 37f18915a261afe84dab462624ed829cddb77a9b
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 (git) before 22e460b6333a5f818b042ac89201f8e735556f4a
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 (git) before f8f73bf0f8a57ee9b86792456bd42079bc98c6b7
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 (git) before d4a132f121c591b60dbaf57ea91f1faf11631fbc
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 (git) before 4d7a8f5f28187e3d2958b2a134473da2665207e7
b69a2afd5afce9bf6d56e349d6ab592c916e20f2 (git) before c5489d04337b47e93c0623e8145fcba3f5739efd
6.0
Any version before 6.0
6.1.165 (semver)
6.6.128 (semver)
6.12.75 (semver)
6.18.16 (semver)
6.19.6 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/37f18915a261afe84dab462624ed829cddb77a9b
git.kernel.org/...c/22e460b6333a5f818b042ac89201f8e735556f4a
git.kernel.org/...c/f8f73bf0f8a57ee9b86792456bd42079bc98c6b7
git.kernel.org/...c/d4a132f121c591b60dbaf57ea91f1faf11631fbc
git.kernel.org/...c/4d7a8f5f28187e3d2958b2a134473da2665207e7
git.kernel.org/...c/c5489d04337b47e93c0623e8145fcba3f5739efd