media: dvbdev: prevent the risk of out of memory access
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: prevent the risk of out of memory access The dvbdev contains a static variable used to store dvb minors. The behavior of it depends if CONFIG_DVB_DYNAMIC_MINORS is set or not. When not set, dvb_register_device() won't check for boundaries, as it will rely that a previous call to dvb_register_adapter() would already be enforcing it. On a similar way, dvb_device_open() uses the assumption that the register functions already did the needed checks. This can be fragile if some device ends using different calls. This also generate warnings on static check analysers like Coverity. So, add explicit guards to prevent potential risk of OOM issues.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.29
References 8
git.kernel.org
- stable/c/fedfde9deb83ac8d2f3d5f36f111023df34b1684
- stable/c/3b88675e18b6517043a6f734eaa8ea6eb3bfa140
- stable/c/a4a17210c03ade1c8d9a9f193a105654b7a05c11
- stable/c/5f76f7df14861e3a560898fa41979ec92424b58f
- stable/c/b751a96025275c17f04083cbfe856822f1658946
- stable/c/1e461672616b726f29261ee81bb991528818537c
- stable/c/9c17085fabbde2041c893d29599800f2d4992b23
- stable/c/972e63e895abbe8aa1ccbdbb4e6362abda7cd457