cbcvebase.
CVE-2023-52699
published 2024-05-19

CVE-2023-52699: In the Linux kernel, the following vulnerability has been resolved: sysv: don't call sb_bread() with pointers_lock held syzbot is reporting sleep in atomic…

PriorityP425medium5.3CVSS 3.1
AVNACLPRNUINSUCNINAL
EPSS
0.97%
58.3th percentile
In the Linux kernel, the following vulnerability has been resolved: sysv: don't call sb_bread() with pointers_lock held syzbot is reporting sleep in atomic context in SysV filesystem [1], for sb_bread() is called with rw_spinlock held. A "write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock" bug and a "sb_bread() with write_lock(&pointers_lock)" bug were introduced by "Replace BKL for chain locking with sysvfs-private rwlock" in Linux 2.5.12. Then, "[PATCH] err1-40: sysvfs locking fix" in Linux 2.6.8 fixed the former bug by moving pointers_lock lock to the callers, but instead introduced a "sb_bread() with read_lock(&pointers_lock)" bug (which made this problem easier to hit). Al Viro suggested that why not to do like get_branch()/get_block()/ find_shared() in Minix filesystem does. And doing like that is almost a revert of "[PATCH] err1-40: sysvfs locking fix" except that get_branch() from with find_shared() is called without write_lock(&pointers_lock).

Affected

25 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.90-1 (bookworm)linux 6.1.90-1 (bookworm)
linuxlinux
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 13b33feb2ebddc2b1aa607f553566b18a4af1d7613b33feb2ebddc2b1aa607f553566b18a4af1d76
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 674c1c4229e743070e09db63a23442950ff000d1674c1c4229e743070e09db63a23442950ff000d1
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fd203d2c671bdee9ab77090ff394d3b71b627927fd203d2c671bdee9ab77090ff394d3b71b627927
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 53cb1e52c9db618c08335984d1ca80db220ccf0953cb1e52c9db618c08335984d1ca80db220ccf09
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 89e8524135a3902e7563a5a59b7b5ec1bf4904ac89e8524135a3902e7563a5a59b7b5ec1bf4904ac
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a69224223746ab96d43e5db9d22d136827b7e2d3a69224223746ab96d43e5db9d22d136827b7e2d3
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f123dc86388cb669c3d6322702dc441abc35c31ef123dc86388cb669c3d6322702dc441abc35c31e
linuxlinux_kernel< 4.19.3124.19.312
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.90-16.1.90-1
linuxlinux_kernel>= 0 < 6.8.9-16.8.9-1
linuxlinux_kernel>= 0 < 6.8.9-16.8.9-1
linuxlinux_kernel>= 0 < 5.4.0-189.2095.4.0-189.209
linuxlinux_kernel>= 0 < 5.15.0-116.1265.15.0-116.126
linuxlinux_kernel>= 0 < 6.8.0-38.386.8.0-38.38
linuxlinux_kernel>= 4.20 < 5.4.2745.4.274
linuxlinux_kernel>= 5.11 < 5.15.1555.15.155
linuxlinux_kernel>= 5.16 < 6.1.866.1.86
linuxlinux_kernel>= 5.5 < 5.10.2155.10.215
linuxlinux_kernel>= 6.2 < 6.6.276.6.27
linuxlinux_kernel>= 6.7 < 6.8.66.8.6

CVSS provenance

nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
osv7.0HIGH
vendor_ubuntu7.0HIGH
vendor_debian5.3MEDIUM
vendor_redhat5.3MEDIUM
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