s390/uv: Don't call folio_wait_writeback() without a folio reference
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 87% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
s390/uv: Don't call folio_wait_writeback() without a folio reference
folio_wait_writeback() requires that no spinlocks are held and that
a folio reference is held, as documented. After we dropped the PTL, the
folio could get freed concurrently. So grab a temporary reference.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1a1eb2f3fc453dcd52726d13e863938561489cb7https://git.kernel.org/stable/c/3f29f6537f54d74e64bac0a390fb2e26da25800dhttps://git.kernel.org/stable/c/8736604ef53359a718c246087cd21dcec232d2fbhttps://git.kernel.org/stable/c/b21aba72aadd94bdac275deab021fc84d6c72b16https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html