Vulnerability · Published Aug 8, 2021 · Assigned by mitre
CVE-2021-38201
High 7.5
In plain English
A high-severity security flaw in the kernel-tools-libs-devel package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.4% (higher than 89% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)3.4%top 11.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-305.17.1.el8_4 | ALSA-2021:3447 |
| Rocky Linux:8 | kernel | 0:4.18.0-305.17.1.el8_4 | RLSA-2021:3447 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-305.17.1.rt7.89.el8_4 | RLSA-2021:3440 |
Affected products (as reported)
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 x_refsource_MISC
- https://github.com/torvalds/linux/commit/6d1c0f3d28f98ea2736128ed3e46821496dc3a8c x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210902-0010/ x_refsource_CONFIRM