drm/i915/gem: Fix phys BO pread/pwrite with offset
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
drm/i915/gem: Fix phys BO pread/pwrite with offset
sg_page() returns struct page pointer not (void *) so the scaling
of pread/pwrite is wrong for phys BO and wrong parts of BO would be
accessed if non-zero offset is used.
Last impacted platform with overlay or cursor planes using phys
mapping was Gen3/945G/Lakeport.
(cherry picked from commit 3e49a2f85070b2fb672c1e0fdba281a4ea3aebe6)
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/07c33be968d9e0cab6cba38c81850a09942fcb2ehttps://git.kernel.org/stable/c/14469860e2e39b7095dcd658d2bad38a11110a68https://git.kernel.org/stable/c/1ec8fc63e9cdb22da54e48e536c9204020416fc6https://git.kernel.org/stable/c/32d4c5d328a3ff995420f4f85163e1e403f43628https://git.kernel.org/stable/c/3bd168dd835b93a3862cd05b0d13c432b115f9d6https://git.kernel.org/stable/c/40f738991058eb3e3530c3006a5bd6fd5e29f035https://git.kernel.org/stable/c/d21ad938398bca695a511307de38a65889e3b354https://git.kernel.org/stable/c/dd51a2eeb93bc6faa892ff9083911dd23f82c187