CVE-2023-52994: In the Linux kernel, the following vulnerability has been resolved: acpi: Fix suspend with Xen PV Commit f1e525009493 ("x86/boot: Skip realmode init code when…

PriorityP421medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.21%

11.9th percentile

In the Linux kernel, the following vulnerability has been resolved: acpi: Fix suspend with Xen PV Commit f1e525009493 ("x86/boot: Skip realmode init code when running as Xen PV guest") missed one code path accessing real_mode_header, leading to dereferencing NULL when suspending the system under Xen: [ 348.284004] PM: suspend entry (deep) [ 348.289532] Filesystems sync: 0.005 seconds [ 348.291545] Freezing user space processes ... (elapsed 0.000 seconds) done. [ 348.292457] OOM killer disabled. [ 348.292462] Freezing remaining freezable tasks ... (elapsed 0.104 seconds) done. [ 348.396612] printk: Suspending console(s) (use no_console_suspend to debug) [ 348.749228] PM: suspend devices took 0.352 seconds [ 348.769713] ACPI: EC: interrupt blocked [ 348.816077] BUG: kernel NULL pointer dereference, address: 000000000000001c [ 348.816080] #PF: supervisor read access in kernel mode [ 348.816081] #PF: error_code(0x0000) - not-present page [ 348.816083] PGD 0 P4D 0 [ 348.816086] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 348.816089] CPU: 0 PID: 6764 Comm: systemd-sleep Not tainted 6.1.3-1.fc32.qubes.x86_64 #1 [ 348.816092] Hardware name: Star Labs StarBook/StarBook, BIOS 8.01 07/03/2022 [ 348.816093] RIP: e030:acpi_get_wakeup_address+0xc/0x20 Fix that by adding an optional acpi callback allowing to skip setting the wakeup address, as in the Xen PV case this will be handled by the hypervisor anyway.

Affected

11 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.11-1 (bookworm)	linux 6.1.11-1 (bookworm)
linux	linux	—	—
linux	linux	>= 6.0.16 < 6.1	6.1
linux	linux	>= 6.1.2 < 6.1.9	6.1.9
linux	linux	>= b1898793777fe10a31c160bb8bc385d6eea640c6 < b96903b7fc8c82ddfd92df4cdd83db3e567da0a5	b96903b7fc8c82ddfd92df4cdd83db3e567da0a5
linux	linux	>= f1e525009493cbd569e7c8dd7d58157855f8658d < fe0ba8c23f9a35b0307eb662f16dd3a75fcdae41	fe0ba8c23f9a35b0307eb662f16dd3a75fcdae41
linux	linux_kernel	>= 0 < 6.1.11-1	6.1.11-1
linux	linux_kernel	>= 0 < 6.1.11-1	6.1.11-1
linux	linux_kernel	>= 0 < 6.1.11-1	6.1.11-1
linux	linux_kernel	>= 6.0.16 < 6.1	6.1
linux	linux_kernel	>= 6.1.2 < 6.1.9	6.1.9

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv5.5MEDIUM

vendor_debian5.5MEDIUM

vendor_redhat5.5MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.