CVE-2026-72057
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net/sched: act_ct: preserve tc_skb_cb across defragmentation
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: preserve tc_skb_cb across defragmentation tcf_ct_handle_fragments() calls nf_ct_handle_fragments() without saving and restoring skb->cb. The defrag helper clears IPCB/IP6CB, which aliases the tc_skb_cb/qdisc_skb_cb control buffer. Fragmented traffic through act_ct therefore loses qdisc metadata such as pkt_segs and can trigger WARN_ON_ONCE() in qdisc_pkt_segs() when panic_on_warn is enabled. Save and restore the full tc_skb_cb around nf_ct_handle_fragments(), matching the pattern used by ovs_ct_handle_fragments().
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) |
|---|---|---|---|---|---|
| 0d76daf2013ce1da20eab5e26bd81d983e1c18fb | affected | git | fb080b6f54835d5d4d11ce3122800e6f0f6689e6 | Unavailable | None listed |
| ec624fe740b416fb68d536b37fb8eef46f90b5c2 | affected | git | 67d6b00a54446c008f52cf70fc0c2ad0c712f85d | Unavailable | None listed |
| ec624fe740b416fb68d536b37fb8eef46f90b5c2 | affected | git | 2400c4b05d58834b994500a9eec90a37db44187c | Unavailable | None listed |
| ec624fe740b416fb68d536b37fb8eef46f90b5c2 | affected | git | 5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac | Unavailable | None listed |
| ec624fe740b416fb68d536b37fb8eef46f90b5c2 | affected | git | b3d835407846134b0d54637c0281b39bebef831d | Unavailable | None listed |
| ec624fe740b416fb68d536b37fb8eef46f90b5c2 | affected | git | f7f45ceb855d9ba1cba594fb3f383255f7013fad | Unavailable | None listed |
| ec624fe740b416fb68d536b37fb8eef46f90b5c2 | affected | git | 9092e15defbe6c7bc241c306093ca9d358a578e7 | Unavailable | None listed |
| 5.15.13 | affected | semver | 5.15.217 | 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) |
|---|---|---|---|---|---|
| 5.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.16 | Unavailable | None listed |
| 5.15.217 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.184 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |