CVE-2022-49170High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on curseg->alloc_type As Wenqing Liu reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215657 - Overview UBSAN: array-in…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.3%
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on curseg->alloc_type
As Wenqing Liu reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=215657
Overview UBSAN: array-index-out-of-bounds in fs/f2fs/segment.c:3460:2 when mount and operate a corrupted image
Reproduce tested on kernel 5.17-rc4, 5.17-rc6
The root cause is we missed to do sanity check on curseg->alloc_type, result in out-of-bound accessing on sbi->block_count[] array, fix it.
linux_kernel >= 3.8, < 5.10.110linux_kernel >= 5.11, < 5.15.33linux_kernel >= 5.16, < 5.16.19linux_kernel >= 5.17, < 5.17.2Upgrade past the affected range:
linux_kernel 5.17.2Connected by shared product, vendor, weakness, or advisory.
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