CVE-2023-54243
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)
netfilter: ebtables: fix table blob use-after-free
In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix table blob use-after-free We are not allowed to return an error at this point. Looking at the code it looks like ret is always 0 at this point, but its not. t = find_table_lock(net, repl->name, &ret, &ebt_mutex); ... this can return a valid table, with ret != 0. This bug causes update of table->private with the new blob, but then frees the blob right away in the caller. Syzbot report: BUG: KASAN: vmalloc-out-of-bounds in __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168 Read of size 4 at addr ffffc90005425000 by task kworker/u4:4/74 Workqueue: netns cleanup_net Call Trace: kasan_report+0xbf/0x1f0 mm/kasan/report.c:517 __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168 ebt_unregister_table+0x35/0x40 net/bridge/netfilter/ebtables.c:1372 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:613 ... ip(6)tables appears to be ok (ret should be 0 at this point) but make this more obvious.
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) |
|---|---|---|---|---|---|
| c58dd2dd443c26d856a168db108a0cd11c285bf3 | affected | git | 9060abce3305ab2354c892c09d5689df51486df5 | Unavailable | None listed |
| c58dd2dd443c26d856a168db108a0cd11c285bf3 | affected | git | dbb3cbbf03b3c52cb390fabec357f1e4638004f5 | Unavailable | None listed |
| c58dd2dd443c26d856a168db108a0cd11c285bf3 | affected | git | 3dd6ac973351308d4117eda32298a9f1d68764fd | Unavailable | None listed |
| c58dd2dd443c26d856a168db108a0cd11c285bf3 | affected | git | cda0e0243bd3c04008fcd37a46b0269fb3c49249 | Unavailable | None listed |
| c58dd2dd443c26d856a168db108a0cd11c285bf3 | affected | git | e58a171d35e32e6e8c37cfe0e8a94406732a331f | Unavailable | None listed |
| a3bc0f8ea439762aa62d40a295157410498cbea7 | affected | git | Unavailable | Unavailable | None listed |
| 8ed40c122919cd79bc3c059e5864e5e7d9d455f0 | affected | git | Unavailable | Unavailable | None listed |
| c5e4ef499cfc78de45a4f01b8c557b5964d77c53 | affected | git | Unavailable | Unavailable | None listed |
| f34728610b2a8c7b9864f9404f2884c17f6fca5c | affected | git | Unavailable | Unavailable | None listed |
| 8b5740915a9faa8b1fa9166193a33e2a9ae30ec6 | affected | git | Unavailable | Unavailable | None listed |
| 3.2.60 | affected | semver | 3.3 | Unavailable | None listed |
| 3.4.91 | affected | semver | 3.5 | Unavailable | None listed |
| 3.10.41 | affected | semver | 3.11 | Unavailable | None listed |
| 3.12.21 | affected | semver | 3.13 | Unavailable | None listed |
| 3.14.5 | affected | semver | 3.15 | 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) |
|---|---|---|---|---|---|
| 3.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.15 | Unavailable | 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 |