mmc: via-sdmmc: fix return value check of mmc_add_host()
Priority LOW 23Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 5 fixed, 2 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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().
Why it matters now
EPSS 0.00284 21st percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.9.337, 4.14.303, 4.19.270 +6Red Hat: 1 advisoryRed Hat: 5 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.31 and later | 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.31 and later Fixed in 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2
Red Hat 1 advisory
- RHSA-2024:9315 Released 2024-11-12 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers-5.14.0-503.11.1.el9_5, kernel-tools-libs-devel-5.14.0-503.11.1.el9_5, libperf-5.14.0-503.11.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.11.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.11.1.el9_5, kernel-64k-devel-5.14.0-503.11.1.el9_5 +12
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.11.1.el9_5, kernel-5.14.0-503.11.1.el9_5, kernel-64k-5.14.0-503.11.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +11
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:9315 |
Not affected: 5 products
- Red Hat CodeReady Linux Builder (v. 9)
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux AppStream (v. 9)
Timeline
- 2026-10-02 Threatist record created from CVE-2022-50846
- 2026-10-03 Alias added: GHSA-f972-7cqm-cm9w
References
Other 9
- https://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00
- https://git.kernel.org/stable/c/12b8e81b77c05c658efd9cde3585bbd65ae39b59
- https://git.kernel.org/stable/c/95025a8dd0ec015872f6c16473fe04d6264e68ca
- https://git.kernel.org/stable/c/f59ef2a47a228e51322ad76752a55a8917c56e38
- https://git.kernel.org/stable/c/63400da6cd37a9793c19bb6aed7131b58b975a04
- https://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b
- https://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3
- https://git.kernel.org/stable/c/ba91b413983a9235792523c6b9f7ba2586c4d75d
- https://git.kernel.org/stable/c/e4e46fb61e3bb4628170810d3f2b996b709b90d9
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Sources
- CVE-2022-50846 · CVE Program
- CVE-2022-50846 · NVD
- FIRST EPSS
- GHSA-f972-7cqm-cm9w · GitHub Advisory Database · CC BY 4.0
- CVE-2022-50846 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences