CVE-2021-47186
In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwise the null key will be dereferenced later in tipc_crypto_key_xmit as can be…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: tipc: check for null after calling kmemdup kmemdup can return a null pointer so need to check for it, otherwise the null key will be dereferenced later in tipc_crypto_key_xmit as can be seen in the trace [1]. [1] https://syzkaller.appspot.com/bug?id=bca180abb29567b189efdbdb34cbf7ba851c2a58
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916Patch
- https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10Patch
- https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9Patch
- https://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916Patch
- https://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10Patch
- https://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.