ACK: [SRU][M/J/F][PATCH 0/1] CVE-2024-26622

[Andrei Gherzan]

On 24/04/01 09:19AM, Bethany Jamison wrote:
> [Impact]
> 
>  In the Linux kernel, the following vulnerability has been resolved:
> 
>  tomoyo: fix UAF write bug in tomoyo_write_control()
> 
>  Since tomoyo_write_control() updates head->write_buf when write()
>  of long lines is requested, we need to fetch head->write_buf after
>  head->io_sem is held.  Otherwise, concurrent write() requests can
>  cause use-after-free-write and double-free problems.
> 
> [Fix]
> 
> Mantic:	Clean cherry-pick
> Jammy:	M patch applied cleanly
> Focal:	M patch applied cleanly
> Bionic:	fix sent to esm ML
> Xenial:	fix sent to esm ML
> Trusty:	not going to be fixed by us
> 
> [Test Case]
> 
> Compile and boot tested.
> 
> [Where problems could occur]
> 
> This affects those who use Tomoyo as a MAC, mandatory access control, 
> issues could occur when writting to the tomoyo interface.
> 
> Tetsuo Handa (1):
>   tomoyo: fix UAF write bug in tomoyo_write_control()
> 
>  security/tomoyo/common.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Acked-by: Andrei Gherzan <andrei.gherzan at canonical.com>

-- 
Andrei Gherzan
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20240405/069449df/attachment.sig>