apparmor: Fix memleak in aa_simple_write_to_buffer()
In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix memleak in aa_simple_write_to_buffer() When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix memleak in aa_simple_write_to_buffer() When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/417ea9fe972d2654a268ad66e89c8fcae67017c3
- https://git.kernel.org/stable/c/6500eb3a48ac221051b1791818a1ac74744ef617
- https://git.kernel.org/stable/c/6583edbf459de2e06b9759f264c0ae27e452b97a
- https://git.kernel.org/stable/c/7db182a2ebeefded86fea542fcc5d6a68bb77f58
- https://git.kernel.org/stable/c/8aab4295582eb397a125d2788b829fa62b88dbf7
- https://git.kernel.org/stable/c/bf7ebebce2c25071c719fd8a2f1307e0c243c2d7
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50074.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50074