CVE-2022-50846 | THREATINT

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().

PUBLISHED Reserved 2025-12-30 | Published 2025-12-30 | Updated 2025-12-30 | Assigner Linux

Product status

Default status

unaffected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before 076bcd2c93e16b05c10564e299d6e5d26a766d00

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before 12b8e81b77c05c658efd9cde3585bbd65ae39b59

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before 95025a8dd0ec015872f6c16473fe04d6264e68ca

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before f59ef2a47a228e51322ad76752a55a8917c56e38

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before 63400da6cd37a9793c19bb6aed7131b58b975a04

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before 0959cc1685eb19774300d43ef25e318b457b156b

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before 0ec94795114edc7e24ec71849dce42bfa61dafa3

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before ba91b413983a9235792523c6b9f7ba2586c4d75d

affected

f0bf7f61b8405224bc52fc9a3ccd167a68126e00 (git) before e4e46fb61e3bb4628170810d3f2b996b709b90d9

affected

Default status

affected

2.6.31

affected

Any version before 2.6.31

unaffected

4.9.337 (semver)

unaffected

4.14.303 (semver)

unaffected

4.19.270 (semver)

unaffected

5.4.229 (semver)

unaffected

5.10.163 (semver)

unaffected

5.15.86 (semver)

unaffected

6.0.16 (semver)

unaffected

6.1.2 (semver)

unaffected

6.2 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/076bcd2c93e16b05c10564e299d6e5d26a766d00

git.kernel.org/...c/12b8e81b77c05c658efd9cde3585bbd65ae39b59

git.kernel.org/...c/95025a8dd0ec015872f6c16473fe04d6264e68ca

git.kernel.org/...c/f59ef2a47a228e51322ad76752a55a8917c56e38

git.kernel.org/...c/63400da6cd37a9793c19bb6aed7131b58b975a04

git.kernel.org/...c/0959cc1685eb19774300d43ef25e318b457b156b

git.kernel.org/...c/0ec94795114edc7e24ec71849dce42bfa61dafa3

git.kernel.org/...c/ba91b413983a9235792523c6b9f7ba2586c4d75d

git.kernel.org/...c/e4e46fb61e3bb4628170810d3f2b996b709b90d9

cve.org (CVE-2022-50846)

nvd.nist.gov (CVE-2022-50846)

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