Out-of-bounds Read in Linux Kernel
CVE-2021-3743
An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.openwall.net/netdev/2021/08/17/124 (Exploit, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/08/27/2 (Exploit, Patch, Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/ (Patch, Vendor Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- github.com/torvalds/linux/commit/7e78c597c3ebfd0cb329aa09a838734147e4f117 (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2022.html (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220407-0007/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3743?
- CVE-2021-3743 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2022-03-04.
- How severe is CVE-2021-3743?
- High severity. CVSS v3 base score is 7.1 out of 10.