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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/17e6ad484dea5ddf1c4a3d6ec77a5929161234de Patch
- https://git.kernel.org/stable/c/18e5e0ec0e9282c897e2aa81a3e43ccaee03b003 Patch
- https://git.kernel.org/stable/c/1e213ba7cb3b9dd97ac2e0a1054e6d0d1d91f5bc Patch
- https://git.kernel.org/stable/c/47a5cecca925ceb175d5adf712e667acf78f475f Patch
- https://git.kernel.org/stable/c/9b26b54861ce05307d39a54ddedddf8747419614 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · linuxNVD modified 2026-10-19 10:17
Affected (CPE criteria) 3
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.3:rc2:*:*:*:*:*:*
References 5
- https://git.kernel.org/stable/c/17e6ad484dea5ddf1c4a3d6ec77a5929161234de Patch
- https://git.kernel.org/stable/c/18e5e0ec0e9282c897e2aa81a3e43ccaee03b003 Patch
- https://git.kernel.org/stable/c/1e213ba7cb3b9dd97ac2e0a1054e6d0d1d91f5bc Patch
- https://git.kernel.org/stable/c/47a5cecca925ceb175d5adf712e667acf78f475f Patch
- https://git.kernel.org/stable/c/9b26b54861ce05307d39a54ddedddf8747419614 Patch