CVE-2023-52770: In the Linux kernel, the following vulnerability has been resolved: f2fs: split initial and dynamic conditions for extent_cache Let's allocate the extent_cache…

PriorityP420medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.24%

14.6th percentile

In the Linux kernel, the following vulnerability has been resolved:

f2fs: split initial and dynamic conditions for extent_cache

Let's allocate the extent_cache tree without dynamic conditions to avoid a
missing condition causing a panic as below.

# create a file w/ a compressed flag
# disable the compression
# panic while updating extent_cache

F2FS-fs (dm-64): Swapfile: last extent is not aligned to section
F2FS-fs (dm-64): Swapfile (3) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(2097152 * N)
Adding 124996k swap on ./swap-file. Priority:0 extents:2 across:17179494468k
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write out/common/include/linux/instrumented.h:101 [inline]
BUG: KASAN: null-ptr-deref in atomic_try_cmpxchg_acquire out/common/include/asm-generic/atomic-instrumented.h:705 [inline]
BUG: KASAN: null-ptr-deref in queued_write_lock out/common/include/asm-generic/qrwlock.h:92 [inline]
BUG: KASAN: null-ptr-deref in __raw_write_lock out/common/include/linux/rwlock_api_smp.h:211 [inline]
BUG: KASAN: null-ptr-deref in _raw_write_lock+0x5a/0x110 out/common/kernel/locking/spinlock.c:295
Write of size 4 at addr 0000000000000030 by task syz-executor154/3327

CPU: 0 PID: 3327 Comm: syz-executor154 Tainted: G O 5.10.185 #1
Hardware name: emulation qemu-x86/qemu-x86, BIOS 2023.01-21885-gb3cc1cd24d 01/01/2023
Call Trace:
__dump_stack out/common/lib/dump_stack.c:77 [inline]
dump_stack_lvl+0x17e/0x1c4 out/common/lib/dump_stack.c:118
__kasan_report+0x16c/0x260 out/common/mm/kasan/report.c:415
kasan_report+0x51/0x70 out/common/mm/kasan/report.c:428
kasan_check_range+0x2f3/0x340 out/common/mm/kasan/generic.c:186
__kasan_check_write+0x14/0x20 out/common/mm/kasan/shadow.c:37
instrument_atomic_read_write out/common/include/linux/instrumented.h:101 [inline]
atomic_try_cmpxchg_acquire out/common/include/asm-generic/atomic-instrumented.h:705 [inline]
queued_write_lock out/common/include/asm-generic/qrwlock.h:92 [inline]
__raw_write_l

Affected

11 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.5.13-1 (forky)	linux 6.5.13-1 (forky)
linux	linux	—	—
linux	linux	—	—
linux	linux	>= 6.1.29 < 6.2	6.2
linux	linux	>= 72840cccc0a1a0a0dc1bb27b669a9111be6d0f6a < 9de787139b0258a5dd1f498780c26d76b61d2958	9de787139b0258a5dd1f498780c26d76b61d2958
linux	linux	>= 72840cccc0a1a0a0dc1bb27b669a9111be6d0f6a < d83309e7e006cee8afca83523559017c824fbf7a	d83309e7e006cee8afca83523559017c824fbf7a
linux	linux	>= 72840cccc0a1a0a0dc1bb27b669a9111be6d0f6a < f803982190f0265fd36cf84670aa6daefc2b0768	f803982190f0265fd36cf84670aa6daefc2b0768
linux	linux_kernel	>= 0 < 6.5.13-1	6.5.13-1
linux	linux_kernel	>= 0 < 6.5.13-1	6.5.13-1
linux	linux_kernel	>= 6.1.29 < 6.5.13	6.5.13
linux	linux_kernel	>= 6.6 < 6.6.3	6.6.3

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

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