Vulnerability Details : CVE-2022-40307
An issue was discovered in the Linux kernel through 5.19.8. drivers/firmware/efi/capsule-loader.c has a race condition with a resultant use-after-free.
Vulnerability category: Memory Corruption
Products affected by CVE-2022-40307
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-40307
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 2 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-40307
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2022-40307
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-40307
-
https://github.com/torvalds/linux/commit/9cb636b5f6a8cc6d1b50809ec8f8d33ae0c84c95
efi: capsule-loader: Fix use-after-free in efi_capsule_write · torvalds/linux@9cb636b · GitHubPatch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
[SECURITY] [DLA 3131-1] linux security updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
[SECURITY] [DLA 3173-1] linux-5.10 security updateMailing List;Third Party Advisory
-
https://www.debian.org/security/2022/dsa-5257
Debian -- Security Information -- DSA-5257-1 linuxThird Party Advisory
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