CVE-2026-63973
CVE CVE-2026-63973EUVD EUVD-2026-45746Published 2026-07-19T14:55:59.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net: mana: Add NULL guards in teardown path to prevent panic on attach failure When queue allocation fails partway through, the error cleanup frees and NULLs apc->tx_qp and apc->rxqs. Multiple teardown paths such as mana_remove(), mana_change_mtu() recovery, and internal error handling in mana_alloc_queues() can subsequently call into functions that dereference these pointers without NULL checks: - mana_chn_setxdp() dereferences apc->rxqs[0], causing a NULL pointer dereference panic (CR2: 0000000000000000 at mana_chn_setxdp+0x26). - mana_destroy_vport() iterates apc->rxqs without a NULL check. - mana_fence_rqs() iterates apc->rxqs without a NULL check. - mana_dealloc_queues() iterates apc->tx_qp without a NULL check. Add NULL guards for apc->rxqs in mana_fence_rqs(), mana_destroy_vport(), and before the mana_chn_setxdp() call. Add a NULL guard for apc->tx_qp in mana_dealloc_queues() to skip TX queue draining when TX queues were never allocated or already freed.
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: 7.0.12; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <26a96fa81496afe7d162d172ccdc8cb9dbc685d2; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <0a9c520fdcb1cb2e79c163c12d359b5e1ee40007; patch: 6.1.176; patch: 6.18.35; patch: 7.1; patch: 6.12.93; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <95e414f8324385771bdfd6d497a01d5593813ccb; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <da7e4a1aaf397af6a094f640c92d6bc7564c10db; 5.13; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <da87896f34e0a51489811d1a684e2953099ca98f; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <17bfe0a8c014ee1d542ad352cd6a0a505361664a; patch: 0; patch: 6.6.143
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
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.