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ubuntucveUbuntu.comUB:CVE-2024-26765
HistoryApr 03, 2024 - 12:00 a.m.

CVE-2024-26765

2024-04-0300:00:00
ubuntu.com
ubuntu.com
6
linux kernel vulnerability
irq disable
loongarch
hotplug issue
unexpected interrupts
cpu warning
cve-2024-26765
security patch
exploit prevention

7.6 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

In the Linux kernel, the following vulnerability has been resolved:
LoongArch: Disable IRQ before init_fn() for nonboot CPUs Disable IRQ before
init_fn() for nonboot CPUs when hotplug, in order to silence such warnings
(and also avoid potential errors due to unexpected interrupts): WARNING:
CPU: 1 PID: 0 at kernel/rcu/tree.c:4503 rcu_cpu_starting+0x214/0x280 CPU: 1
PID: 0 Comm: swapper/1 Not tainted 6.6.17+ #1198 pc 90000000048e3334 ra
90000000047bd56c tp 900000010039c000 sp 900000010039fdd0 a0
0000000000000001 a1 0000000000000006 a2 900000000802c040 a3
0000000000000000 a4 0000000000000001 a5 0000000000000004 a6
0000000000000000 a7 90000000048e3f4c t0 0000000000000001 t1
9000000005c70968 t2 0000000004000000 t3 000000000005e56e t4
00000000000002e4 t5 0000000000001000 t6 ffffffff80000000 t7
0000000000040000 t8 9000000007931638 u0 0000000000000006 s9
0000000000000004 s0 0000000000000001 s1 9000000006356ac0 s2
9000000007244000 s3 0000000000000001 s4 0000000000000001 s5
900000000636f000 s6 7fffffffffffffff s7 9000000002123940 s8
9000000001ca55f8 ra: 90000000047bd56c tlb_init+0x24c/0x528 ERA:
90000000048e3334 rcu_cpu_starting+0x214/0x280 CRMD: 000000b0 (PLV0 -IE -DA
+PG DACF=CC DACM=CC -WE) PRMD: 00000000 (PPLV0 -PIE -PWE) EUEN: 00000000
(-FPE -SXE -ASXE -BTE) ECFG: 00071000 (LIE=12 VS=7) ESTAT: 000c0000 [BRK]
(IS= ECode=12 EsubCode=0) PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.6.17+ #1198 Stack :
0000000000000000 9000000006375000 9000000005b61878 900000010039c000
900000010039fa30 0000000000000000 900000010039fa38 900000000619a140
9000000006456888 9000000006456880 900000010039f950 0000000000000001
0000000000000001 cb0cb028ec7e52e1 0000000002b90000 9000000100348700
0000000000000000 0000000000000001 ffffffff916d12f1 0000000000000003
0000000000040000 9000000007930370 0000000002b90000 0000000000000004
9000000006366000 900000000619a140 0000000000000000 0000000000000004
0000000000000000 0000000000000009 ffffffffffc681f2 9000000002123940
9000000001ca55f8 9000000006366000 90000000047a4828 00007ffff057ded8
00000000000000b0 0000000000000000 0000000000000000 0000000000071000 …
Call Trace: [<90000000047a4828>] show_stack+0x48/0x1a0 [<9000000005b61874>]
dump_stack_lvl+0x84/0xcc [<90000000047f60ac>] __warn+0x8c/0x1e0
[<9000000005b0ab34>] report_bug+0x1b4/0x280 [<9000000005b63110>]
do_bp+0x2d0/0x480 [<90000000047a2e20>] handle_bp+0x120/0x1c0
[<90000000048e3334>] rcu_cpu_starting+0x214/0x280 [<90000000047bd568>]
tlb_init+0x248/0x528 [<90000000047a4c44>] per_cpu_trap_init+0x124/0x160
[<90000000047a19f4>] cpu_probe+0x494/0xa00 [<90000000047b551c>]
start_secondary+0x3c/0xc0 [<9000000005b66134>] smpboot_entry+0x50/0x58

Notes

Author Note
rodrigo-zaiden affects LoongArch processor architecture only
OSVersionArchitecturePackageVersionFilename
ubuntu24.04noarchlinux-nvidia< anyUNKNOWN

7.6 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%