CVE-2023-53826
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show()
In the Linux kernel, the following vulnerability has been resolved: ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show() Wear-leveling entry could be freed in error path, which may be accessed again in eraseblk_count_seq_show(), for example: __erase_worker eraseblk_count_seq_show wl = ubi->lookuptbl[*block_number] if (wl) wl_entry_destroy ubi->lookuptbl[e->pnum] = NULL kmem_cache_free(ubi_wl_entry_slab, e) erase_count = wl->ec // UAF! Wear-leveling entry updating/accessing in ubi->lookuptbl should be protected by ubi->wl_lock, fix it by adding ubi->wl_lock to serialize wl entry accessing between wl_entry_destroy() and eraseblk_count_seq_show(). Fetch a reproducer in [Link].
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | 3f9b63dfce44a7c3c095dd93d910408e07ab1845 | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | 84250da1c63cb7d421a3b4812b5c2ce2e47d31a1 | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | 1cb14c06d6035539ef4215c4ba0871aea71d7c38 | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | 9d448dd6bcb61a508204b57ea1f454ba9bac2f24 | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | 79548ccdd992707879b4b683b7251c58ddf26f12 | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | 84253f3c2dad6be10d30c92626c763d9a9f512ad | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | a100de2974d208cfca032179b02ed4d1a0a7f143 | Unavailable | None listed |
| 801c135ce73d5df1caf3eca35b66a10824ae0707 | affected | git | a240bc5c43130c6aa50831d7caaa02a1d84e1bce | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.22 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.22 | Unavailable | None listed |
| 4.14.308 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.276 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.235 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.173 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.100 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.18 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2.5 | unaffected | semver | Unavailable | 6.2.* | None listed |
| 6.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |