cbcvebase.
CVE-2024-49927
published 2024-10-21

CVE-2024-49927: In the Linux kernel, the following vulnerability has been resolved: x86/ioapic: Handle allocation failures gracefully Breno observed panics when using failslab…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
14.9th percentile
In the Linux kernel, the following vulnerability has been resolved: x86/ioapic: Handle allocation failures gracefully Breno observed panics when using failslab under certain conditions during runtime: can not alloc irq_pin_list (-1,0,20) Kernel panic - not syncing: IO-APIC: failed to add irq-pin. Can not proceed panic+0x4e9/0x590 mp_irqdomain_alloc+0x9ab/0xa80 irq_domain_alloc_irqs_locked+0x25d/0x8d0 __irq_domain_alloc_irqs+0x80/0x110 mp_map_pin_to_irq+0x645/0x890 acpi_register_gsi_ioapic+0xe6/0x150 hpet_open+0x313/0x480 That's a pointless panic which is a leftover of the historic IO/APIC code which panic'ed during early boot when the interrupt allocation failed. The only place which might justify panic is the PIT/HPET timer_check() code which tries to figure out whether the timer interrupt is delivered through the IO/APIC. But that code does not require to handle interrupt allocation failures. If the interrupt cannot be allocated then timer delivery fails and it either panics due to that or falls back to legacy mode. Cure this by removing the panic wrapper around __add_pin_to_irq_node() and making mp_irqdomain_alloc() aware of the failure condition and handle it as any other failure in this function gracefully.

Affected

31 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.115-1 (bookworm)linux 6.1.115-1 (bookworm)
debianlinux-6.1< linux 6.1.115-1 (bookworm)linux 6.1.115-1 (bookworm)
linuxlinux
linuxlinux>= 49c7e60022912d10da88ba67e8eb2927f1143f6a < e479cb835feeb2abff97f25766e23b96a6eabe28e479cb835feeb2abff97f25766e23b96a6eabe28
linuxlinux>= 49c7e60022912d10da88ba67e8eb2927f1143f6a < ec862cd843faa6f0e84a7a07362f2786446bf697ec862cd843faa6f0e84a7a07362f2786446bf697
linuxlinux>= 49c7e60022912d10da88ba67e8eb2927f1143f6a < 077e1b7cd521163ded545987bbbd389519aeed71077e1b7cd521163ded545987bbbd389519aeed71
linuxlinux>= 49c7e60022912d10da88ba67e8eb2927f1143f6a < 649a5c2ffae797ce792023a70e84c7fe4b6fb8e0649a5c2ffae797ce792023a70e84c7fe4b6fb8e0
linuxlinux>= 49c7e60022912d10da88ba67e8eb2927f1143f6a < f17efbeb2922327ea01a9efa8829fea9a30e547df17efbeb2922327ea01a9efa8829fea9a30e547d
linuxlinux>= 49c7e60022912d10da88ba67e8eb2927f1143f6a < 830802a0fea8fb39d3dc9fb7d6b5581e1343eb1f830802a0fea8fb39d3dc9fb7d6b5581e1343eb1f
linuxlinux_kernel< 5.15.1685.15.168
linuxlinux_kernel>= 0 < 6.1.115-16.1.115-1
linuxlinux_kernel>= 0 < 6.11.4-16.11.4-1
linuxlinux_kernel>= 0 < 6.11.4-16.11.4-1
linuxlinux_kernel>= 0 < 5.15.0-127.1375.15.0-127.137
linuxlinux_kernel>= 0 < 6.8.0-54.566.8.0-54.56
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 0 < 4.4.0-278.3124.4.0-278.312
linuxlinux_kernel>= 0 < 4.15.0-247.2594.15.0-247.259
linuxlinux_kernel>= 0 < 5.4.0-227.2475.4.0-227.247
linuxlinux_kernel>= 5.16 < 6.1.1136.1.113
linuxlinux_kernel>= 6.11 < 6.11.36.11.3
linuxlinux_kernel>= 6.2 < 6.6.556.6.55
linuxlinux_kernel>= 6.7 < 6.10.146.10.14
msrccbl2_kernel_5.15.167.1-2_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.173.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
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.