CVE-2026-64055
CVE CVE-2026-64055EUVD EUVD-2026-45628Published 2026-07-19T15:39:37.000ZLast changed 2026-08-05T12:38:44.000ZCVSS 9.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Carry over frag counter The gmac_rx() NAPI poll function assembles packets in an SKB from a ring buffer. If the ring buffer gets completely emptied during a poll cycle, we exit gmac_rx(), but the packet is not yet completely assembled in the SKB, yet the fragment counter frag_nr is reset to zero on the next invocation. Solve this by making the RX fragment counter a part of the port struct, and carry it over between invocations. Reset the fragment counter only right after calling napi_gro_frags(), on error (after calling napi_free_frags()) or if stopping the port. Reset it in some place where not strictly necessary just to emphasize what is going on. This was found by Sashiko during normal patch review.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 5.15.209; 4.16; patch: 6.18.34; patch: 6.1.175; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <46806096f35b8d3dfa2f321ddd77f597edcdb85f; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <c373b34877afea61c89e0dd2e38948c624249b9b; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <df31e3b64455293df1ea89c7da7d5c9bfbcdd253; patch: 0; patch: 6.12.92; patch: 7.1; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <ebd8ec2b309e3a447851b456ccaf8fb39f3661e7; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <78cf08b3be47c28f07008a76c932bad7cdffa9d8; patch: 6.6.142; patch: 5.10.258; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <7123cf481e21b54eb6adc4cb0d8dc2876aeaee41; patch: 7.0.11; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <7af1fabdee744b7995fe01b30b77dfc397657cb5; 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 <75105fcf73f1ce7d9f769aaefec6e6d6645d5ac0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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