CVE-2026-80977
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: skbuff: don't touch shared zerocopy state in skb_tx_error()
In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skb_tx_error() skb_tx_error() completes the zerocopy uarg and clears SKBFL_ALL_ZEROCOPY, and skb_zcopy_downgrade_managed() clears SKBFL_MANAGED_FRAG_REFS. Both live in skb_shinfo(), which every clone shares, while the caller only owns the reference it is about to drop. Through a clone it tells the producer its pages are free and drops SKBFL_SHARED_FRAG for an skb that is still in flight. Open vSwitch reaches this with a non-last OVS_ACTION_ATTR_RECIRC: clone_execute() sends a skb_clone() into ovs_dp_process_packet() while do_execute_actions() keeps forwarding the original, and skb_clone() does not privatise the frags here -- skb_orphan_frags() returns early on SKBFL_DONT_ORPHAN. A flow miss on the clone then strips the marker from the packet still being forwarded, and a later local ESP delivery decrypts in place over frags it does not own privately. Skip it for a cloned skb. Nothing is lost: skb_release_data() clears the zerocopy state once the last reference to the shared data goes.
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) |
|---|---|---|---|---|---|
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | 6493165034bca14033bf49c9cec7b45e97a91497 | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | b4452349dcf4d561e13be768d5d278de58248930 | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | 363c4252ffc473a0203e91b83ede5519dfb8bd07 | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | 6ec22afc82a3cae07ade0a6ec361ae2532128ff5 | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | 15aa81b390d401abf4b8211042470e9e92e3b7fb | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | 288f9970670841044ab030104fa6b6ed159949d0 | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | 0370da114a9bc044e248b85c6809d1b5e0c1f7f9 | Unavailable | None listed |
| 25121173f7b1e4ac3fc692df6e7b8c52ec36abba | affected | git | f66bdb1cc0fcd227a062378f8be0b5873aa5600a | 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) |
|---|---|---|---|---|---|
| 3.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.8 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |