CVE-2022-50846
mmc: via-sdmmc: fix return value check of mmc_add_host()
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: mmc: via-sdmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). Fix this by checking the return value and goto error path which will call mmc_free_host().
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < 076bcd2c93e16b05c10564e299d6e5d26a766d00
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < 12b8e81b77c05c658efd9cde3585bbd65ae39b59
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < 95025a8dd0ec015872f6c16473fe04d6264e68ca
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < f59ef2a47a228e51322ad76752a55a8917c56e38
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < 63400da6cd37a9793c19bb6aed7131b58b975a04
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < 0959cc1685eb19774300d43ef25e318b457b156b
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < 0ec94795114edc7e24ec71849dce42bfa61dafa3
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < ba91b413983a9235792523c6b9f7ba2586c4d75d
- affected f0bf7f61b8405224bc52fc9a3ccd167a68126e00 – < e4e46fb61e3bb4628170810d3f2b996b709b90d9
- affected 2.6.31
- unaffected < 2.6.31
- unaffected 4.9.337 – ≤ 4.9.*
- unaffected 4.14.303 – ≤ 4.14.*
- unaffected 4.19.270 – ≤ 4.19.*
- unaffected 5.4.229 – ≤ 5.4.*
- unaffected 5.10.163 – ≤ 5.10.*
- unaffected 5.15.86 – ≤ 5.15.*
- unaffected 6.0.16 – ≤ 6.0.*
- unaffected 6.1.2 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (9)
- https://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00 (opens in a new tab)
- https://git.kernel.org/stable/c/12b8e81b77c05c658efd9cde3585bbd65ae39b59 (opens in a new tab)
- https://git.kernel.org/stable/c/95025a8dd0ec015872f6c16473fe04d6264e68ca (opens in a new tab)
- https://git.kernel.org/stable/c/f59ef2a47a228e51322ad76752a55a8917c56e38 (opens in a new tab)
- https://git.kernel.org/stable/c/63400da6cd37a9793c19bb6aed7131b58b975a04 (opens in a new tab)
- https://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b (opens in a new tab)
- https://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3 (opens in a new tab)
- https://git.kernel.org/stable/c/ba91b413983a9235792523c6b9f7ba2586c4d75d (opens in a new tab)
- https://git.kernel.org/stable/c/e4e46fb61e3bb4628170810d3f2b996b709b90d9 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-50846)Record last updated .