cifs: prevent use-after-free by freeing the cfile later
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a possible use-after-free which can cause hard to debug problems later on. This was revealed during stress testing with KASAN enabled kernel. Fixing it by moving the cfile free call to a few lines below, after the usage.
02 / AFFECTED SOFTWARE
Affected packages
759 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a possible use-after-free which can cause hard to debug problems later on. This was revealed during stress testing with KASAN enabled kernel. Fixing it by moving the cfile free call to a few lines below, after the usage.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/33f736187d08f6bc822117629f263b97d3df4165
- https://git.kernel.org/stable/c/4fe07d55a5461e66a55fbefb57f85ff0facea32b
- https://git.kernel.org/stable/c/b6353518ef8180816e863aa23b06456f395404d6
- https://git.kernel.org/stable/c/d017880782cf71f8820ee4a2002843893176501d
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53377.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53377