CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2023-52889 – apparmor: Fix null pointer deref when receiving skb during sock creation
https://notcve.org/view.php?id=CVE-2023-52889
In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix null pointer deref when receiving skb during sock creation The panic below is observed when receiving ICMP packets with secmark set while an ICMP raw socket is being created. SK_CTX(sk)->label is updated in apparmor_socket_post_create(), but the packet is delivered to the socket before that, causing the null pointer dereference. Drop the packet if label context is not set. BUG: kernel NULL pointer dereference, address: 000000000000004c #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 407 Comm: a.out Not tainted 6.4.12-arch1-1 #1 3e6fa2753a2d75925c34ecb78e22e85a65d083df Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 05/28/2020 RIP: 0010:aa_label_next_confined+0xb/0x40 Code: 00 00 48 89 ef e8 d5 25 0c 00 e9 66 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 0f 1f 44 00 00 89 f0 <8b> 77 4c 39 c6 7e 1f 48 63 d0 48 8d 14 d7 eb 0b 83 c0 01 48 83 c2 RSP: 0018:ffffa92940003b08 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000e RDX: ffffa92940003be8 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8b57471e7800 R08: ffff8b574c642400 R09: 0000000000000002 R10: ffffffffbd820eeb R11: ffffffffbeb7ff00 R12: ffff8b574c642400 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 FS: 00007fb092ea7640(0000) GS:ffff8b577bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000004c CR3: 00000001020f2005 CR4: 00000000007706f0 PKRU: 55555554 Call Trace: <IRQ> ? __die+0x23/0x70 ? page_fault_oops+0x171/0x4e0 ? • https://git.kernel.org/stable/c/ab9f2115081ab7ba63b77a759e0f3eb5d6463d7f https://git.kernel.org/stable/c/0abe35bc48d4ec80424b1f4b3560c0e082cbd5c1 https://git.kernel.org/stable/c/347dcb84a4874b5fb375092c08d8cc4069b94f81 https://git.kernel.org/stable/c/290a6b88e8c19b6636ed1acc733d1458206f7697 https://git.kernel.org/stable/c/ead2ad1d9f045f26fdce3ef1644913b3a6cd38f2 https://git.kernel.org/stable/c/6c920754f62cefc63fccdc38a062c7c3452e2961 https://git.kernel.org/stable/c/46c17ead5b7389e22e7dc9903fd0ba865d05bda2 https://git.kernel.org/stable/c/fce09ea314505a52f2436397608fa0a5d •
CVSS: 6.3EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42271 – net/iucv: fix use after free in iucv_sock_close()
https://notcve.org/view.php?id=CVE-2024-42271
In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix use after free in iucv_sock_close() iucv_sever_path() is called from process context and from bh context. iucv->path is used as indicator whether somebody else is taking care of severing the path (or it is already removed / never existed). This needs to be done with atomic compare and swap, otherwise there is a small window where iucv_sock_close() will try to work with a path that has already been severed and freed by iucv_callback_connrej() called by iucv_tasklet_fn(). Example: [452744.123844] Call Trace: [452744.123845] ([<0000001e87f03880>] 0x1e87f03880) [452744.123966] [<00000000d593001e>] iucv_path_sever+0x96/0x138 [452744.124330] [<000003ff801ddbca>] iucv_sever_path+0xc2/0xd0 [af_iucv] [452744.124336] [<000003ff801e01b6>] iucv_sock_close+0xa6/0x310 [af_iucv] [452744.124341] [<000003ff801e08cc>] iucv_sock_release+0x3c/0xd0 [af_iucv] [452744.124345] [<00000000d574794e>] __sock_release+0x5e/0xe8 [452744.124815] [<00000000d5747a0c>] sock_close+0x34/0x48 [452744.124820] [<00000000d5421642>] __fput+0xba/0x268 [452744.124826] [<00000000d51b382c>] task_work_run+0xbc/0xf0 [452744.124832] [<00000000d5145710>] do_notify_resume+0x88/0x90 [452744.124841] [<00000000d5978096>] system_call+0xe2/0x2c8 [452744.125319] Last Breaking-Event-Address: [452744.125321] [<00000000d5930018>] iucv_path_sever+0x90/0x138 [452744.125324] [452744.125325] Kernel panic - not syncing: Fatal exception in interrupt Note that bh_lock_sock() is not serializing the tasklet context against process context, because the check for sock_owned_by_user() and corresponding handling is missing. Ideas for a future clean-up patch: A) Correct usage of bh_lock_sock() in tasklet context, as described in Re-enqueue, if needed. This may require adding return values to the tasklet functions and thus changes to all users of iucv. B) Change iucv tasklet into worker and use only lock_sock() in af_iucv. • https://git.kernel.org/stable/c/7d316b9453523498246e9e19a659c423d4c5081e https://git.kernel.org/stable/c/84f40b46787ecb67c7ad08a5bb1376141fa10c01 https://git.kernel.org/stable/c/37652fbef9809411cea55ea5fa1a170e299efcd0 https://git.kernel.org/stable/c/c65f72eec60a34ace031426e04e9aff8e5f04895 https://git.kernel.org/stable/c/ac758e1f663fe9bc64f6b47212a2aa18697524f5 https://git.kernel.org/stable/c/8b424c9e44111c5a76f41c6b741f8d4c4179d876 https://git.kernel.org/stable/c/01437282fd3904810603f3dc98d2cac6b8b6fc84 https://git.kernel.org/stable/c/69620522c48ce8215e5eb55ffbab8cafe • CWE-416: Use After Free •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-42267 – riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error()
https://notcve.org/view.php?id=CVE-2024-42267
In the Linux kernel, the following vulnerability has been resolved: riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error() Handle VM_FAULT_SIGSEGV in the page fault path so that we correctly kill the process and we don't BUG() the kernel. • https://git.kernel.org/stable/c/07037db5d479f90377c998259a4f9a469c404edf https://git.kernel.org/stable/c/59be4a167782d68e21068a761b90b01fadc09146 https://git.kernel.org/stable/c/20dbdebc5580cd472a310d56a6e252275ee4c864 https://git.kernel.org/stable/c/d7ccf2ca772bfe33e2c53ef80fa20d2d87eb6144 https://git.kernel.org/stable/c/917f598209f3f5e4ab175d5079d8aeb523e58b1f https://git.kernel.org/stable/c/d4e7db757e2d7f4c407a007e92c98477eab215d2 https://git.kernel.org/stable/c/0c710050c47d45eb77b28c271cddefc5c785cb40 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42265 – protect the fetch of ->fd[fd] in do_dup2() from mispredictions
https://notcve.org/view.php?id=CVE-2024-42265
In the Linux kernel, the following vulnerability has been resolved: protect the fetch of ->fd[fd] in do_dup2() from mispredictions both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That's wrong for the same reasons why it's wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path. • https://git.kernel.org/stable/c/ed42e8ff509d2a61c6642d1825032072dab79f26 https://git.kernel.org/stable/c/41a6c31df77bd8e050136b0a200b537da9e1084a https://git.kernel.org/stable/c/08775b3d6ed117cf4518754ec7300ee42b6a5368 https://git.kernel.org/stable/c/3f480493550b6a23d3a65d095d6569d4a7f56a0f https://git.kernel.org/stable/c/5db999fff545b924b24c9afd368ef5c17279b176 https://git.kernel.org/stable/c/da72e783afd27d9f487836b2e6738146c0edd149 https://git.kernel.org/stable/c/1171ceccabfd596ca370c5d2cbb47d110c3f2fe1 https://git.kernel.org/stable/c/8aa37bde1a7b645816cda8b80df4753ec • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42259 – drm/i915/gem: Fix Virtual Memory mapping boundaries calculation
https://notcve.org/view.php?id=CVE-2024-42259
In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Fix Virtual Memory mapping boundaries calculation Calculating the size of the mapped area as the lesser value between the requested size and the actual size does not consider the partial mapping offset. This can cause page fault access. Fix the calculation of the starting and ending addresses, the total size is now deduced from the difference between the end and start addresses. Additionally, the calculations have been rewritten in a clearer and more understandable form. [Joonas: Add Requires: tag] Requires: 60a2066c5005 ("drm/i915/gem: Adjust vma offset for framebuffer mmap offset") (cherry picked from commit 97b6784753da06d9d40232328efc5c5367e53417) Linux i915 suffers from an out-of-bounds PTE write in vm_fault_gtt() that leads to a PTE use-after-free vulnerability. • https://git.kernel.org/stable/c/c58305af1835095ddc25ee6f548ac05915e66ac5 https://git.kernel.org/stable/c/3e06073d24807f04b4694108a8474decb7b99e60 https://git.kernel.org/stable/c/a256d019eaf044864c7e50312f0a65b323c24f39 https://git.kernel.org/stable/c/50111a8098fb9ade621eeff82228a997d42732ab https://git.kernel.org/stable/c/911f8055f175c82775d0fd8cedcd0b75413f4ba7 https://git.kernel.org/stable/c/e8a68aa842d3f8dd04a46b9d632e5f67fde1da9b https://git.kernel.org/stable/c/4b09513ce93b3dcb590baaaff2ce96f2d098312d https://git.kernel.org/stable/c/ead9289a51ea82eb5b27029fcf4c34b2d •