CVE-2026-98052 (GCVE-0-2026-98052)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:24 – Updated: 2026-10-19 09:12
VLAI
Title
net: bcmasp: clear txcb->last before writing each descriptor
Summary
In the Linux kernel, the following vulnerability has been resolved: net: bcmasp: clear txcb->last before writing each descriptor bcmasp_xmit() only wrote txcb->last = true for the final fragment of an SKB; non-final fragments left the field untouched. If a descriptor slot was reused while it still held a stale true from a previous SKB (possible when tx_spb_ring_full() underreported fullness), bcmasp_tx_reclaim() would see last == true mid-SKB and call dev_consume_skb_any() prematurely, freeing the sk_buff while its remaining fragments were still in flight. Unconditionally clear txcb->last before the conditional set so every descriptor slot starts from a known false state regardless of what a prior transmission left behind.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 490cb412007de593e07c1d3e2b1ec4233886707c , < 1e213ba7cb3b9dd97ac2e0a1054e6d0d1d91f5bc (git)
Affected: 490cb412007de593e07c1d3e2b1ec4233886707c , < 9b26b54861ce05307d39a54ddedddf8747419614 (git)
Affected: 490cb412007de593e07c1d3e2b1ec4233886707c , < 47a5cecca925ceb175d5adf712e667acf78f475f (git)
Affected: 490cb412007de593e07c1d3e2b1ec4233886707c , < 17e6ad484dea5ddf1c4a3d6ec77a5929161234de (git)
Affected: 490cb412007de593e07c1d3e2b1ec4233886707c , < 18e5e0ec0e9282c897e2aa81a3e43ccaee03b003 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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}



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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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