CVE-2023-53220
media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
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
3.4
References 8
git.kernel.org
- stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7
- stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2
- stable/c/991c77fe18c6f374bbf83376f8c42550aa565662
- stable/c/a9def3e9718a4dc756f48db147d42ec41a966240
- stable/c/5b1ea100ad3695025969dc4693f307877fb688d6
- stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba
- stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7
- stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f