x86/kexec: Fix double-free of elf header buffer
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
x86/kexec: Fix double-free of elf header buffer
After
b3e34a47f989 ("x86/kexec: fix memory leak of elf header buffer"),
freeing image->elf_headers in the error path of crash_load_segments()
is not needed because kimage_file_post_load_cleanup() will take
care of that later. And not clearing it could result in a double-free.
Drop the superfluous vfree() call at the error path of
crash_load_segments().
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/4c71a552b97fb4f46eb300224434fe56fcf4f254https://git.kernel.org/stable/c/554a880a1fff46dd5a355dec21cd77d542a0ddf2https://git.kernel.org/stable/c/5bd3c7abeb69fb4133418b846a1c6dc11313d6f0https://git.kernel.org/stable/c/d00dd2f2645dca04cf399d8fc692f3f69b6dd996https://git.kernel.org/stable/c/fbdbf8ac333d3d47c0d9ea81d7d445654431d100