CVE-2021-47207
ALSA: gus: fix null pointer dereference on pointer block
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: gus: fix null pointer dereference on pointer block The pointer block return from snd_gf1_dma_next_block could be null, so there is a potential null pointer dereference issue. Fix this by adding a null check before dereference.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.12
References 8
git.kernel.org
- stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be
- stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc
- stable/c/542fa721594a02d2aee0370a764d306ef48d030c
- stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315
- stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc
- stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f
- stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3
- stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa