[UBUNTU oem-5.14, jammy, oem-5.17, kinetic, oem-6.0, unstable 0/2] CVE-2022-4378

[Thadeu Lima de Souza Cascardo]

[Impact]
Unprivileged user could cause stack overflow when writing too many
whitespaces on a sysctl file. Using user/network namespaces make it possible
for unprivileged users.

[Testing]
A simple script was used to test it. The fix worked on the tested 5.14, 5.15,
5.19 and 6.1 kernels.

[Potential regression]
Writing to sysctl files may fail or parse incorrectly.

Linus Torvalds (2):
  proc: proc_skip_spaces() shouldn't think it is working on C strings
  proc: avoid integer type confusion in get_proc_long

 kernel/sysctl.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

-- 
2.34.1