Description
In the Linux kernel, the following vulnerability has been resolved: tls: always refresh the queue when reading sock After recent changes in net-next TCP compacts skbs much more aggressively. This unearthed a bug in TLS where we may try to operate on an old skb when checking if all skbs in the queue have matching decrypt state and geometry. BUG: KASAN: slab-use-after-free in tls_strp_check_rcv+0x898/0x9a0 [tls] (net/tls/tls_strp.c:436 net/tls/tls_strp.c:530 net/tls/tls_strp.c:544) Read of size 4 at addr ffff888013085750 by task tls/13529 CPU: 2 UID: 0 PID: 13529 Comm: tls Not tainted 6.16.0-rc5-virtme Call Trace: kasan_report+0xca/0x100 tls_strp_check_rcv+0x898/0x9a0 [tls] tls_rx_rec_wait+0x2c9/0x8d0 [tls] tls_sw_recvmsg+0x40f/0x1aa0 [tls] inet_recvmsg+0x1c3/0x1f0 Always reload the queue, fast path is to have the record in the queue when we wake, anyway (IOW the path going down "if !strp->stm.full_len").
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0d87bbd39d7fd1135ab9eca672d760470f6508e8 to < 730fed2ff5e259495712518e18d9f521f61972bbaffected0d87bbd39d7fd1135ab9eca672d760470f6508e8 to < 1f3a429c21e0e43e8b8c55d30701e91411a4df02affected0d87bbd39d7fd1135ab9eca672d760470f6508e8 to < cdb767915fc9a15d88d19d52a1455f1dc3e5ddc8affected0d87bbd39d7fd1135ab9eca672d760470f6508e8 to < c76f6f437c46b2390888e0e1dc7aafafa9f4e0c6affected0d87bbd39d7fd1135ab9eca672d760470f6508e8 to < 4ab26bce3969f8fd925fe6f6f551e4d1a508c68baffected2277d7cbdf47531b2c3cd01ba15255fa955aab35affected6.0.6 to < 6.1affected
Linux Linux
Default version status: affected
6.1affected0 to < 6.1unaffected6.1.147 to ≤ 6.1.*unaffected6.6.100 to ≤ 6.6.*unaffected6.12.40 to ≤ 6.12.*unaffected6.15.8 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/730fed2ff5e259495712518e18d9f521f61972bb ↗
- https://git.kernel.org/stable/c/1f3a429c21e0e43e8b8c55d30701e91411a4df02 ↗
- https://git.kernel.org/stable/c/cdb767915fc9a15d88d19d52a1455f1dc3e5ddc8 ↗
- https://git.kernel.org/stable/c/c76f6f437c46b2390888e0e1dc7aafafa9f4e0c6 ↗
- https://git.kernel.org/stable/c/4ab26bce3969f8fd925fe6f6f551e4d1a508c68b ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html ↗