{"id":"CVE-2026-98052","summary":"net: bcmasp: clear txcb-\u003elast before writing each descriptor","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmasp: clear txcb-\u003elast before writing each descriptor\n\nbcmasp_xmit() only wrote txcb-\u003elast = true for the final fragment\nof an SKB; non-final fragments left the field untouched.  If a\ndescriptor slot was reused while it still held a stale true from\na previous SKB (possible when tx_spb_ring_full() underreported\nfullness), bcmasp_tx_reclaim() would see last == true mid-SKB and\ncall dev_consume_skb_any() prematurely, freeing the sk_buff while\nits remaining fragments were still in flight.\n\nUnconditionally clear txcb-\u003elast before the conditional set so every\ndescriptor slot starts from a known false state regardless of what a\nprior transmission left behind.","modified":"2026-09-27T03:47:34.952784889Z","published":"2026-09-25T10:24:00.441Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98052.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/17e6ad484dea5ddf1c4a3d6ec77a5929161234de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/18e5e0ec0e9282c897e2aa81a3e43ccaee03b003"},{"type":"WEB","url":"https://git.kernel.org/stable/c/47a5cecca925ceb175d5adf712e667acf78f475f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9b26b54861ce05307d39a54ddedddf8747419614"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98052.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98052"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"490cb412007de593e07c1d3e2b1ec4233886707c"},{"fixed":"9b26b54861ce05307d39a54ddedddf8747419614"},{"fixed":"47a5cecca925ceb175d5adf712e667acf78f475f"},{"fixed":"17e6ad484dea5ddf1c4a3d6ec77a5929161234de"},{"fixed":"18e5e0ec0e9282c897e2aa81a3e43ccaee03b003"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98052.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98052.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}