CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50090 – drm/xe/oa: Fix overflow in oa batch buffer
https://notcve.org/view.php?id=CVE-2024-50090
In the Linux kernel, the following vulnerability has been resolved: drm/xe/oa: Fix overflow in oa batch buffer By default xe_bb_create_job() appends a MI_BATCH_BUFFER_END to batch buffer, this is not a problem if batch buffer is only used once but oa reuses the batch buffer for the same metric and at each call it appends a MI_BATCH_BUFFER_END, printing the warning below and then overflowing. [ 381.072016] ------------[ cut here ]------------ [ 381.072019] xe 0000:00:02.0: [drm] Assertion `bb->len * 4 + bb_prefetch(q->gt) <= size` failed! platform: LUNARLAKE subplatform: 1 graphics: Xe2_LPG / Xe2_HPG 20.04 step B0 media: Xe2_LPM / Xe2_HPM 20.00 step B0 tile: 0 VRAM 0 B GT: 0 type 1 So here checking if batch buffer already have MI_BATCH_BUFFER_END if not append it. v2: - simply fix, suggestion from Ashutosh (cherry picked from commit 9ba0e0f30ca42a98af3689460063edfb6315718a) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/xe/oa: Corregir desbordamiento en el búfer por lotes de oa. De manera predeterminada, xe_bb_create_job() agrega un MI_BATCH_BUFFER_END al buffer por lotes, esto no es un problema si el buffer por lotes solo se usa una vez, pero oa reutiliza el búfer por lotes para la misma métrica y en cada llamada agrega un MI_BATCH_BUFFER_END, imprimiendo la advertencia a continuación y luego desbordándose. [ 381.072016] ------------[ cortar aquí ]------------ [ 381.072019] xe 0000:00:02.0: [drm] ¡La afirmación `bb->len * 4 + bb_prefetch(q->gt) <= size` falló! Plataforma: LUNARLAKE Subplataforma: 1 Gráficos: Xe2_LPG / Xe2_HPG 20.04 Paso B0 Medios: Xe2_LPM / Xe2_HPM 20.00 Paso B0 Mosaico: 0 VRAM 0 B GT: 0 Tipo 1 Aquí se verifica si el buffer de lote ya tiene MI_BATCH_BUFFER_END si no, se agrega. v2: - simplemente se arregla, sugerencia de Ashutosh (seleccionada del commit 9ba0e0f30ca42a98af3689460063edfb6315718a) • https://git.kernel.org/stable/c/bcb5be3421705e682b0b32073ad627056d6bc2a2 https://git.kernel.org/stable/c/6c10ba06bb1b48acce6d4d9c1e33beb9954f1788 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-50089 – unicode: Don't special case ignorable code points
https://notcve.org/view.php?id=CVE-2024-50089
In the Linux kernel, the following vulnerability has been resolved: unicode: Don't special case ignorable code points We don't need to handle them separately. Instead, just let them decompose/casefold to themselves. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: unicode: No aplicar mayúsculas y minúsculas especiales a los puntos de código que se puedan ignorar. No necesitamos manejarlos por separado. En su lugar, simplemente dejamos que se descompongan o se conviertan en mayúsculas y minúsculas por sí mismos. • https://git.kernel.org/stable/c/39fffca572844d733b137a0ff9eacd67b9b0c8e3 https://git.kernel.org/stable/c/651b954cd8d5b0a358ceb47c93876bb6201224e4 https://git.kernel.org/stable/c/21526498d25e54bda3c650f756493d63fd9131b7 https://git.kernel.org/stable/c/ac20736861f3c9c8e0a78273a4c57e9bcb0d8cc6 https://git.kernel.org/stable/c/876d3577a5b353e482d9228d45fa0d82bf1af53a https://git.kernel.org/stable/c/5c26d2f1d3f5e4be3e196526bead29ecb139cf91 •
CVSS: -EPSS: 0%CPEs: 1EXPL: 0CVE-2023-52920 – bpf: support non-r10 register spill/fill to/from stack in precision tracking
https://notcve.org/view.php?id=CVE-2023-52920
In the Linux kernel, the following vulnerability has been resolved: bpf: support non-r10 register spill/fill to/from stack in precision tracking Use instruction (jump) history to record instructions that performed register spill/fill to/from stack, regardless if this was done through read-only r10 register, or any other register after copying r10 into it *and* potentially adjusting offset. To make this work reliably, we push extra per-instruction flags into instruction history, encoding stack slot index (spi) and stack frame number in extra 10 bit flags we take away from prev_idx in instruction history. We don't touch idx field for maximum performance, as it's checked most frequently during backtracking. This change removes basically the last remaining practical limitation of precision backtracking logic in BPF verifier. It fixes known deficiencies, but also opens up new opportunities to reduce number of verified states, explored in the subsequent patches. There are only three differences in selftests' BPF object files according to veristat, all in the positive direction (less states). File Program Insns (A) Insns (B) Insns (DIFF) States (A) States (B) States (DIFF) -------------------------------------- ------------- --------- --------- ------------- ---------- ---------- ------------- test_cls_redirect_dynptr.bpf.linked3.o cls_redirect 2987 2864 -123 (-4.12%) 240 231 -9 (-3.75%) xdp_synproxy_kern.bpf.linked3.o syncookie_tc 82848 82661 -187 (-0.23%) 5107 5073 -34 (-0.67%) xdp_synproxy_kern.bpf.linked3.o syncookie_xdp 85116 84964 -152 (-0.18%) 5162 5130 -32 (-0.62%) Note, I avoided renaming jmp_history to more generic insn_hist to minimize number of lines changed and potential merge conflicts between bpf and bpf-next trees. Notice also cur_hist_entry pointer reset to NULL at the beginning of instruction verification loop. This pointer avoids the problem of relying on last jump history entry's insn_idx to determine whether we already have entry for current instruction or not. It can happen that we added jump history entry because current instruction is_jmp_point(), but also we need to add instruction flags for stack access. • https://git.kernel.org/stable/c/41f6f64e6999a837048b1bd13a2f8742964eca6b •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-50086 – ksmbd: fix user-after-free from session log off
https://notcve.org/view.php?id=CVE-2024-50086
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used. • https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08 https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-50085 – mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow
https://notcve.org/view.php?id=CVE-2024-50085
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow Syzkaller reported this splat: ================================================================== BUG: KASAN: slab-use-after-free in mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881 Read of size 4 at addr ffff8880569ac858 by task syz.1.2799/14662 CPU: 0 UID: 0 PID: 14662 Comm: syz.1.2799 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881 mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:914 [inline] mptcp_nl_remove_id_zero_address+0x305/0x4a0 net/mptcp/pm_netlink.c:1572 mptcp_pm_nl_del_addr_doit+0x5c9/0x770 net/mptcp/pm_netlink.c:1603 genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg net/socket.c:744 [inline] ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2607 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2661 __sys_sendmsg+0x117/0x1f0 net/socket.c:2690 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fe4579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f574556c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000020000140 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Allocated by task 5387: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kmalloc_noprof include/linux/slab.h:878 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] subflow_create_ctx+0x87/0x2a0 net/mptcp/subflow.c:1803 subflow_ulp_init+0xc3/0x4d0 net/mptcp/subflow.c:1956 __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline] tcp_set_ulp+0x326/0x7f0 net/ipv4/tcp_ulp.c:167 mptcp_subflow_create_socket+0x4ae/0x10a0 net/mptcp/subflow.c:1764 __mptcp_subflow_connect+0x3cc/0x1490 net/mptcp/subflow.c:1592 mptcp_pm_create_subflow_or_signal_addr+0xbda/0x23a0 net/mptcp/pm_netlink.c:642 mptcp_pm_nl_fully_established net/mptcp/pm_netlink.c:650 [inline] mptcp_pm_nl_work+0x3a1/0x4f0 net/mptcp/pm_netlink.c:943 mptcp_worker+0x15a/0x1240 net/mptcp/protocol.c:2777 process_one_work+0x958/0x1b30 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/ke ---truncated--- • https://git.kernel.org/stable/c/35b31f5549ede4070566b949781e83495906b43d https://git.kernel.org/stable/c/85b866e4c4e63a1d7afb58f1e24273caad03d0b7 https://git.kernel.org/stable/c/d20bf2c96d7ffd171299b32f562f70e5bf5dc608 https://git.kernel.org/stable/c/1c1f721375989579e46741f59523e39ec9b2a9bd https://git.kernel.org/stable/c/2060f1efab370b496c4903b840844ecaff324c3c https://git.kernel.org/stable/c/35301636439138b821f1f6169bd00d348ebd388a https://git.kernel.org/stable/c/da3343bc0839b180fd9af9c27fa456d8231409f9 https://git.kernel.org/stable/c/7b2e478abab0b3a33515433a6af563aeb •