CVE-2022-49258
In the Linux kernel, the following vulnerability has been resolved: crypto: ccree - Fix use after free in cc_cipher_exit() kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: ccree - Fix use after free in cc_cipher_exit() kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But ctx_p->user.key is still used in the next line, which will lead to a use after free. We can call kfree_sensitive() after dev_dbg() to avoid the uaf.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/25c358efee5153dfd240d4e0d3169d5bebe9cacdPatch
- https://git.kernel.org/stable/c/335bf1fc74f775a8255257aa3e33763f2257b676Patch
- https://git.kernel.org/stable/c/3d950c34074ed74d2713c3856ba01264523289e6Patch
- https://git.kernel.org/stable/c/c93017c8d5ebf55a4e453ac7c84cc84cf92ab570Patch
- https://git.kernel.org/stable/c/cffb5382bd8d3cf21b874ab5b84bf7618932286bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.