CVE-2026-74695
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)
netfilter: nf_flow_table: drop existing skb dst before skb_dst_set_noref()
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_flow_table: drop existing skb dst before skb_dst_set_noref() Incoming skbs passing through netfilter flowtable offload hooks (or XFRM offload path) might already carry a ref-counted dst_entry assigned during earlier RX or routing steps. Calling skb_dst_set_noref() when skb already holds a ref-counted dst overwrites skb->_skb_refdst, leaking the previous dst_entry reference count and triggering a DEBUG_NET_WARN_ON_ONCE assertion in skb_dst_check_unset(): WARNING: at skb_dst_check_unset include/linux/skbuff.h:1170 WARNING: at skb_dst_set_noref include/linux/skbuff.h:1234 WARNING: at nf_flow_offload_ip_hook+0xf6c/0x2b60 net/netfilter/nf_flow_table_ip.c:864 Drop any existing dst_entry reference with skb_dst_drop(skb) before setting the non-referenced flowtable destination.
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) |
|---|---|---|---|---|---|
| 2a79fd3908acd88e6cb0e620c314d7b1fee56a02 | affected | git | 4db3b48a966ed479b99cc8319ea9e46d4f7c703b | Unavailable | None listed |
| 2a79fd3908acd88e6cb0e620c314d7b1fee56a02 | affected | git | 274f544a32c08638ee887f2e27e3235b6b1237d4 | Unavailable | None listed |
| 2a79fd3908acd88e6cb0e620c314d7b1fee56a02 | affected | git | 12afa450a6a6c0cce2c42b7545a9958f62d8a00c | Unavailable | None listed |
| 2a79fd3908acd88e6cb0e620c314d7b1fee56a02 | affected | git | 538e67e8c7889cf5f93951f5309d1bcb41f86036 | Unavailable | None listed |
| 2a79fd3908acd88e6cb0e620c314d7b1fee56a02 | affected | git | 8aecf0bbcc72605592134c917c222207d8f63ab0 | Unavailable | None listed |
| b4b1adf2e66ecc7125c4117e7aad9ff61e2cfd27 | affected | git | Unavailable | Unavailable | None listed |
| 209dedf806d31095968f54323dbe62525b077b33 | affected | git | Unavailable | Unavailable | None listed |
| 4.16.15 | affected | semver | 4.17 | Unavailable | None listed |
| 4.17.1 | affected | semver | 4.18 | 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) |
|---|---|---|---|---|---|
| 4.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.18 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.45 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.9 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |