CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-42281 – bpf: Fix a segment issue when downgrading gso_size
https://notcve.org/view.php?id=CVE-2024-42281
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a segment issue when downgrading gso_size Linearize the skb when downgrading gso_size because it may trigger a BUG_ON() later when the skb is segmented as described in [1,2]. • https://git.kernel.org/stable/c/2be7e212d5419a400d051c84ca9fdd083e5aacac https://git.kernel.org/stable/c/a689f5eb13a90f892a088865478b3cd39f53d5dc https://git.kernel.org/stable/c/dda518dea60d556a2d171c0122ca7d9fdb7d473a https://git.kernel.org/stable/c/f6bb8c90cab97a3e03f8d30e3069efe6a742e0be https://git.kernel.org/stable/c/11ec79f5c7f74261874744039bc1551023edd6b2 https://git.kernel.org/stable/c/c3496314c53e7e82ddb544c825defc3e8c0e45cf https://git.kernel.org/stable/c/ec4eea14d75f7b0491194dd413f540dd19b8c733 https://git.kernel.org/stable/c/fa5ef655615a01533035c6139248c5b33 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42280 – mISDN: Fix a use after free in hfcmulti_tx()
https://notcve.org/view.php?id=CVE-2024-42280
In the Linux kernel, the following vulnerability has been resolved: mISDN: Fix a use after free in hfcmulti_tx() Don't dereference *sp after calling dev_kfree_skb(*sp). • https://git.kernel.org/stable/c/af69fb3a8ffa37e986db00ed93099dc44babeef4 https://git.kernel.org/stable/c/70db2c84631f50e02e6b32b543700699dd395803 https://git.kernel.org/stable/c/d3e4d4a98c5629ccdcb762a0ff6c82ba9738a0c3 https://git.kernel.org/stable/c/9460ac3dd1ae033bc2b021a458fb535a0c36ddb2 https://git.kernel.org/stable/c/8f4030277dfb9dbe04fd78566b19931097c9d629 https://git.kernel.org/stable/c/4d8b642985ae24f4b3656438eb8489834a17bb80 https://git.kernel.org/stable/c/ddc79556641ee070d36be0de4a1f0a16a71f1fc7 https://git.kernel.org/stable/c/7e4a539bca7d8d20f2c5d93c18cce8ef7 •
CVSS: 4.4EPSS: 0%CPEs: 7EXPL: 0CVE-2024-42276 – nvme-pci: add missing condition check for existence of mapped data
https://notcve.org/view.php?id=CVE-2024-42276
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: add missing condition check for existence of mapped data nvme_map_data() is called when request has physical segments, hence the nvme_unmap_data() should have same condition to avoid dereference. • https://git.kernel.org/stable/c/4aedb705437f6f98b45f45c394e6803ca67abd33 https://git.kernel.org/stable/c/3f8ec1d6b0ebd8268307d52be8301973fa5a01ec https://git.kernel.org/stable/c/be23ae63080e0bf9e246ab20207200bca6585eba https://git.kernel.org/stable/c/7cc1f4cd90a00b6191cb8cda2d1302fdce59361c https://git.kernel.org/stable/c/d135c3352f7c947a922da93c8e763ee6bc208b64 https://git.kernel.org/stable/c/77848b379e9f85a08048a2c8b3b4a7e8396f5f83 https://git.kernel.org/stable/c/70100fe721840bf6d8e5abd25b8bffe4d2e049b7 https://git.kernel.org/stable/c/c31fad1470389666ac7169fe43aa65bf5 • CWE-476: NULL Pointer Dereference •
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. A possible use-after-free vulnerability was found in the Linux kernel in iucv_sock_close(). This issue may lead to a crash or memory corruption. • 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 •