CVE-2026-98052

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux490cb412007de593e07c1d3e2b1ec4233886707c < 9b26b54861ce05307d39a54ddedddf8747419614affected
LinuxLinux490cb412007de593e07c1d3e2b1ec4233886707c < 47a5cecca925ceb175d5adf712e667acf78f475faffected
LinuxLinux490cb412007de593e07c1d3e2b1ec4233886707c < 17e6ad484dea5ddf1c4a3d6ec77a5929161234deaffected
LinuxLinux490cb412007de593e07c1d3e2b1ec4233886707c < 18e5e0ec0e9282c897e2aa81a3e43ccaee03b003affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References