ubi: Fix possible null-ptr-deref in ubi_free_volume()
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 4 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: ubi: Fix possible null-ptr-deref in ubi_free_volume() It willl cause null-ptr-deref in the following case: uif_init() ubi_add_volume() cdev_add() -> if it fails, call kill_volumes() device_register() kill_volumes() -> if ubi_add_volume() fails call this function ubi_free_volume() cdev_del() device_unregister() -> trying to delete a not added device, it causes null-ptr-deref So in ubi_free_volume(), it delete devices whether they are added or not, it will causes null-ptr-deref. Handle the error case whlie calling ubi_add_volume() to fix this problem. If add volume fails, set the corresponding vol to null, so it can not be accessed in kill_volumes() and release the resource in ubi_add_volume() error path.
Why it matters now
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 | 2.6.22 and later | 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5, 6.3 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.22 and later Fixed in 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5, 6.3 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5, 6.3
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 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 10
Timeline
- 2026-10-02 Threatist record created from CVE-2023-54087
- 2026-10-03 Alias added: GHSA-9w7w-3xjc-3wgw
References
Other 8
- https://git.kernel.org/stable/c/5558bcf1c58720ca6e9d6198d921cb3aa337f038
- https://git.kernel.org/stable/c/45b2c5ca4d2edae70f19fdb086bd927840c4c309
- https://git.kernel.org/stable/c/234c53e57424992e657e6f4acc00d3df0983176f
- https://git.kernel.org/stable/c/fcbc795abe7897da4b5d2a6ab5010e36774b00c2
- https://git.kernel.org/stable/c/5ec4c8aca5a221756a9007deadfea92795319fee
- https://git.kernel.org/stable/c/2ea7195b195009ecf0046e55361f393ba96d02db
- https://git.kernel.org/stable/c/9eccdb0760cbcb4427b5303a83a3007de998af51
- https://git.kernel.org/stable/c/c15859bfd326c10230f09cb48a17f8a35f190342
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Sources
- CVE-2023-54087 · CVE Program
- CVE-2023-54087 · NVD
- FIRST EPSS
- GHSA-9w7w-3xjc-3wgw · GitHub Advisory Database · CC BY 4.0
- CVE-2023-54087 · Red Hat security data · CC BY 4.0
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