CVE-2026-98052net: bcmasp: clear txcb->last before writing each descriptor
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 490cb412007de593e07c1d3e2b1ec4233886707c builds before 1e213ba7cb3b9dd97ac2e0a1054e6d0d1d91f5bc; 490cb412007de593e07c1d3e2b1ec4233886707c builds before 9b26b54861ce05307d39a54ddedddf8747419614; 490cb412007de593e07c1d3e2b1ec4233886707c builds before 47a5cecca925ceb175d5adf712e667acf78f475f; 490cb412007de593e07c1d3e2b1ec4233886707c builds before 17e6ad484dea5ddf1c4a3d6ec77a5929161234de; 490cb412007de593e07c1d3e2b1ec4233886707c builds before 18e5e0ec0e9282c897e2aa81a3e43ccaee03b003 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.6 before 6.6.158; from 6.7 before 6.12.111; from 6.13 before 6.18.53; from 6.19 before 7.2.7; 7.3; 7.3 | NVD |
References
- https://git.kernel.org/stable/c/1e213ba7cb3b9dd97ac2e0a1054e6d0d1d91f5bcpatch
- https://git.kernel.org/stable/c/9b26b54861ce05307d39a54ddedddf8747419614patch
- https://git.kernel.org/stable/c/47a5cecca925ceb175d5adf712e667acf78f475fpatch
- https://git.kernel.org/stable/c/17e6ad484dea5ddf1c4a3d6ec77a5929161234depatch
- https://git.kernel.org/stable/c/18e5e0ec0e9282c897e2aa81a3e43ccaee03b003patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.