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CVE-2023-53147 — xfrm: add NULL check in xfrm_update_ae_params

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

xfrm: add NULL check in xfrm_update_ae_params

Normally, x->replay_esn and x->preplay_esn should be allocated at xfrm_alloc_replay_state_esn(...) in xfrm_state_construct(...), hence the xfrm_update_ae_params(...) is okay to update them. However, the current implementation of xfrm_new_ae(...) allows a malicious user to directly dereference a NULL pointer and crash the kernel like below.

BUG: kernel NULL pointer dereference, address: 0000000000000000 PGD 8253067 P4D 8253067 PUD 8e0e067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 98 Comm: poc.npd Not tainted 6.4.0-rc7-00072-gdad9774deaf1 #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.o4 RIP: 0010:memcpy_orig+0xad/0x140 Code: e8 4c 89 5f e0 48 8d 7f e0 73 d2 83 c2 20 48 29 d6 48 29 d7 83 fa 10 72 34 4c 8b 06 4c 8b 4e 08 c RSP: 0018:ffff888008f57658 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff888008bd0000 RCX: ffffffff8238e571 RDX: 0000000000000018 RSI: ffff888007f64844 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888008f57818 R13: ffff888007f64aa4 R14: 0000000000000000 R15: 0000000000000000 FS: 00000000014013c0(0000) GS:ffff88806d600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000054d8000 CR4: 00000000000006f0 Call Trace:…

RHSA-2023:7077 — security update for kernel

security update for kernel

RHSA-2024:0575 — Red Hat Security Advisory: kernel security and bug fix update

kernel: writeback: avoid use-after-free after removing device kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c kernel: HID: check empty report_list in hid_validate_values() kernel: net/tls: tls_is_tx_ready() checked list_entry kernel: hid: Use After Free in asus_remove() kernel: Possible use-after-free since the two fdget() during vhost_net_set_backend() kernel: use-after-free bug in remove function xgene_hwmon_remove kernel: UAF during login when accessing the shost ipaddress kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe kernel: Use after free bug in r592_remove kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race kernel: net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead kernel: xfrm: NULL pointer dereference in xfrm_update_ae_params() kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags kernel: smsusb: use-after-free caused by do_submit_urb() kernel: use after free in unix_stream_sendpage kernel: net/sched: sch_hfsc UAF kernel: use after free in nvmet_tcp_free_crypto in NVMe kernel: A heap out-of-bounds write when function perf_read_group is called and sibling_list is smaller than its child's sibling_list Kernel: denial of service in atm_tc_enqueue in net/sched/sch_atm.c due to type confusion kernel: mpls: double free on sysctl allocation failure kernel: Denial of service issue in az6027…