CVE-2022-50347
mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and calling mmc_free_host() in the error path, besides, led_classdev_unregister() and pm_runtime_disable() also need be called.
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
3.16
References 9
git.kernel.org
- stable/c/d7ad7278be401b09c9f9a9f522cf4c449c7fd489
- stable/c/e598c9683fe1cf97c2b11b800cc3cee072108220
- stable/c/89303ddbb502c3bc8edbf864f9f85500c8fe07e9
- stable/c/937112e991ed25d1727d878734adcbef3b900274
- stable/c/7fa922c7a3dd623fd59f1af50e8896fd9ca7f654
- stable/c/df683201c7ffbd21a806a7cad657b661c5ebfb6f
- stable/c/1491667d5450778a265eddddd294219acfd648cb
- stable/c/a522e26a20a43dcfbef9ee9f71ed803290e852b0
- stable/c/fc38a5a10e9e5a75eb9189854abeb8405b214cc9