GSD-2021-1002497 net/smc: fix wrong list_del in smc_lgr_cleanup_early
A use-after-free vulnerability in the Linux Kernel SMC protocol allows attackers to cause denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002497?
GSD-2021-1002497 is an use after free vulnerability in Kernel, published on 19 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
net/smc: fix wrong list_del in smc_lgr_cleanup_early
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.84 by commit 77731fede297a23d26f2d169b4269466b2c82529, it was introduced in version v5.5 by commit a0a62ee15a829ebf8aeec55a4f1688230439b3e0. For more details please see the references link.
Which versions are affected by GSD-2021-1002497?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002497?
No fix has been published for GSD-2021-1002497 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2021-1002497 being exploited?
There is no known exploitation of GSD-2021-1002497 in the wild and no public exploit code.