What’s Vulnerable › Vulnerabilities

CVE-2022-49388: ubi: ubi_create_volume: Fix use-after-free when volume creation failed

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: ubi: ubi_create_volume: Fix use-after-free when volume creation failed There is an use-after-free problem for 'eba_tbl' in ubi_create_volume()'s error handling path: ubi_eba_replace_table(vol, eba_tbl) vol->eba_tbl = tbl out_mapping: ubi_eba_destroy_table(eba_tbl) // Free 'eba_tbl' out_unlock: put_device(&vol->dev) vol_release kfree(tbl->entries) // UAF Fix it by removing redundant 'eba_tbl' releasing. Fetch a reproducer in [Link].

Affected products

• Linux kernel: from 4.12 before 4.14.283; from 4.15 before 4.19.247; from 4.20 before 5.4.198; from 5.5 before 5.10.122; from 5.11 before 5.15.47; from 5.16 before 5.17.15 — fixed in 4.14.283, 4.19.247, 5.10.122, 5.15.47, 5.17.15, 5.18.4

How to fix

Upgrade to a fixed version: Linux kernel 4.14.283, 4.19.247, 5.10.122, 5.15.47. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1174ab8ba36a48025b68b5ff1085000b1e510217
• https://git.kernel.org/stable/c/25ff1e3a1351c0d936dd1ac2f9e58231ea1510c9
• https://git.kernel.org/stable/c/5ff2514e4fb55dcf3d88294686040ca73ea0c1a2
• https://git.kernel.org/stable/c/6d8d3f68cbecfd31925796f0fb668eb21ab06734
• https://git.kernel.org/stable/c/8302620aeb940f386817321d272b12411ae7d39f
• https://git.kernel.org/stable/c/8c03a1c21d72210f81cb369cc528e3fde4b45411
• https://git.kernel.org/stable/c/abb67043060f2bf4c03d7c3debb9ae980e2b6db3
• https://git.kernel.org/stable/c/e27ecf325e51abd06aaefba57a6322a46fa4178b

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