CVE-2025-38732
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
netfilter: nf_reject: don't leak dst refcount for loopback packets
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_reject: don't leak dst refcount for loopback packets recent patches to add a WARN() when replacing skb dst entry found an old bug: WARNING: include/linux/skbuff.h:1165 skb_dst_check_unset include/linux/skbuff.h:1164 [inline] WARNING: include/linux/skbuff.h:1165 skb_dst_set include/linux/skbuff.h:1210 [inline] WARNING: include/linux/skbuff.h:1165 nf_reject_fill_skb_dst+0x2a4/0x330 net/ipv4/netfilter/nf_reject_ipv4.c:234 [..] Call Trace: nf_send_unreach+0x17b/0x6e0 net/ipv4/netfilter/nf_reject_ipv4.c:325 nft_reject_inet_eval+0x4bc/0x690 net/netfilter/nft_reject_inet.c:27 expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline] .. This is because blamed commit forgot about loopback packets. Such packets already have a dst_entry attached, even at PRE_ROUTING stage. Instead of checking hook just check if the skb already has a route attached to it.
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) |
|---|---|---|---|---|---|
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | 7b8b503c06274ef3c6c1a107743f1ec0d0a53ef8 | Unavailable | None listed |
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | 82ef97abf22790182f7d433c74960dfd61b99c33 | Unavailable | None listed |
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | b7a885ba25960c91db237c3f83b4285156789bce | Unavailable | None listed |
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | a0a3ace2a57887dac1e7c9a724846040c3e31868 | Unavailable | None listed |
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | 51e8531371f90bee742c63775c9a568e5d6bf3c5 | Unavailable | None listed |
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | b32e1590a8d22cf7d7f965e46d5576051acf8e42 | Unavailable | None listed |
| f53b9b0bdc59c0823679f2e3214e0d538f5951b9 | affected | git | 91a79b792204313153e1bdbbe5acbfc28903b3a5 | 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) |
|---|---|---|---|---|---|
| 5.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.9 | Unavailable | None listed |
| 5.10.241 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.190 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.149 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.103 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.44 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.16.4 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |