Vulnerability · Published Nov 28, 2020 · Assigned by mitre
CVE-2020-29372
Medium 4.7
In plain English
A medium-severity race condition in the linux package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.7Medium
Exploit odds (30 days)0.4%top 65.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue was discovered in do_madvise in mm/madvise.c in the Linux kernel before 5.6.8. There is a race condition between coredump operations and the IORING_OP_MADVISE implementation, aka CID-bc0c4d1e176e.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.6.14-1 | DEBIAN-CVE-2020-29372 |
| Debian:13 | linux | 5.6.14-1 | DEBIAN-CVE-2020-29372 |
| Debian:14 | linux | 5.6.14-1 | DEBIAN-CVE-2020-29372 |
Affected products (as reported)
Weakness: CWE-362 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8 x_refsource_MISC
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0c4d1e176eeb614dc8734fc3ace34292771f11 x_refsource_MISC
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2029 x_refsource_MISC
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html x_refsource_MISC
- https://project-zero.issues.chromium.org/issues/42451131 exploit