CVE-2026-23044
- Source
- https://cve.org/CVERecord?id=CVE-2026-23044
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23044.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-23044
- Downstream
- Published
- 2026-02-04T16:00:27Z
- Modified
- 2026-08-12T03:51:10Z
- Summary
- PM: hibernate: Fix crash when freeing invalid crypto compressor
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
PM: hibernate: Fix crash when freeing invalid crypto compressor
When crypto_alloc_acomp() fails, it returns an ERR_PTR value, not NULL.
The cleanup code in save_compressed_image() and load_compressed_image() unconditionally calls crypto_free_acomp() without checking for ERR_PTR, which causes crypto_acomp_tfm() to dereference an invalid pointer and crash the kernel.
This can be triggered when the compression algorithm is unavailable (e.g., CONFIG_CRYPTO_LZO not enabled).
Fix by adding IS_ERR_OR_NULL() checks before calling crypto_free_acomp() and acomp_request_free(), similar to the existing kthread_stop() check.
[ rjw: Added 2 empty code lines ]
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23044.json" }- References
-
- https://git.kernel.org/stable/c/7966cf0ebe32c981bfa3db252cb5fc3bb1bf2e77
- https://git.kernel.org/stable/c/b7a883b0135dbc6817e90a829421c9fc8cd94bad
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23044.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-23044
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git