cbcvebase.
CVE-2024-26686
published 2024-04-03

CVE-2024-26686: In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
11.7th percentile
In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time. Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.

Affected

19 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4fe85bdaabd63f8f8579b24a10ed597c9c4821644fe85bdaabd63f8f8579b24a10ed597c9c482164
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c35d1914353799c54fa1843fe7dea6fcbcdbac50c35d1914353799c54fa1843fe7dea6fcbcdbac5
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4dcf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3820b0fac7732a653bcc6f6ac20c1d72e697f8f63820b0fac7732a653bcc6f6ac20c1d72e697f8f6
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 27978243f165b44e342f28f449b91327944ea07127978243f165b44e342f28f449b91327944ea071
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7601df8031fd67310af891897ef6cc0df42093057601df8031fd67310af891897ef6cc0df4209305
linuxlinux_kernel< 6.1.826.1.82
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.237-15.10.237-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 5.15.0-144.1575.15.0-144.157
linuxlinux_kernel>= 6.2 < 6.7.66.7.6
msrcazl3_kernel_6.6.82.1-1_on_azure_linux_3.0
msrcazl3_kernel_6.6.92.2-1_on_azure_linux_3.0
msrccbl2_kernel_5.15.182.1-1_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
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