CVE-2022-49388
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:…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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].
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.29% probability · 22th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1174ab8ba36a48025b68b5ff1085000b1e510217Patch
- https://git.kernel.org/stable/c/25ff1e3a1351c0d936dd1ac2f9e58231ea1510c9Patch
- https://git.kernel.org/stable/c/5ff2514e4fb55dcf3d88294686040ca73ea0c1a2Patch
- https://git.kernel.org/stable/c/6d8d3f68cbecfd31925796f0fb668eb21ab06734Patch
- https://git.kernel.org/stable/c/8302620aeb940f386817321d272b12411ae7d39fPatch
- https://git.kernel.org/stable/c/8c03a1c21d72210f81cb369cc528e3fde4b45411Patch
- https://git.kernel.org/stable/c/abb67043060f2bf4c03d7c3debb9ae980e2b6db3Patch
- https://git.kernel.org/stable/c/e27ecf325e51abd06aaefba57a6322a46fa4178bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.