CVSS: 4.4EPSS: 0%CPEs: 17EXPL: 0CVE-2023-2269 – kernel: A possible deadlock in dm_get_inactive_table in dm- ioctl.c leads to dos
https://notcve.org/view.php?id=CVE-2023-2269
A denial of service problem was found, due to a possible recursive locking scenario, resulting in a deadlock in table_clear in drivers/md/dm-ioctl.c in the Linux Kernel Device Mapper-Multipathing sub-component. A flaw was found in the Linux Kernel, leading to a denial of service. This issue occurs due to a possible recursive locking scenario, resulting in a deadlock in table_clear in drivers/md/dm-ioctl.c in the Linux Kernel Device Mapper-Multipathing sub-component. • https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63AJUCJTZCII2JMAF7MGZEM66KY7IALT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FBLBKW2WM5YSTS6OGEU5SYHXSJ5EWSTV https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXHBLWYNSUBS77TYPOJTADPDXKBH2F4U https://lore.kernel.org/lkml • CWE-413: Improper Resource Locking CWE-667: Improper Locking •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2023-31084 – kernel: blocking operation in dvb_frontend_get_event and wait_event_interruptible
https://notcve.org/view.php?id=CVE-2023-31084
An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b8c75e4a1b325ea0a9433fa8834be97b5836b946 https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HIEOLEOURP4BJZMIL7UGGPYRRB44UDN https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AOATNX5UFL7V7W2QDIQKOHFFHYKWFP4W https://lore.kernel.org/all/CA •
CVSS: 5.6EPSS: 0%CPEs: 2EXPL: 2CVE-2023-1998 – Spectre v2 SMT mitigations problem in Linux kernel
https://notcve.org/view.php?id=CVE-2023-1998
The Linux kernel allows userspace processes to enable mitigations by calling prctl with PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to attacks in some cases even after enabling the spectre-BTI mitigation with prctl. The same behavior can be observed on a bare-metal machine when forcing the mitigation to IBRS on boot command line. This happened because when plain IBRS was enabled (not enhanced IBRS), the kernel had some logic that determined that STIBP was not needed. The IBRS bit implicitly protects against cross-thread branch target injection. However, with legacy IBRS, the IBRS bit was cleared on returning to userspace, due to performance reasons, which disabled the implicit STIBP and left userspace threads vulnerable to cross-thread branch target injection against which STIBP protects. • https://www.exploit-db.com/exploits/51384 https://github.com/google/security-research/security/advisories/GHSA-mj4w-6495-6crx https://github.com/torvalds/linux/commit/6921ed9049bc7457f66c1596c5b78aec0dae4a9d https://kernel.dance/#6921ed9049bc7457f66c1596c5b78aec0dae4a9d https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html https://access.redhat.com/security/cve/CVE-2023-1998 https://bugzilla.redhat.com/show_bug.cgi?id=2187257 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-203: Observable Discrepancy CWE-1303: Non-Transparent Sharing of Microarchitectural Resources •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 1CVE-2023-28484 – libxml2: NULL dereference in xmlSchemaFixupComplexType
https://notcve.org/view.php?id=CVE-2023-28484
In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c. A NULL pointer dereference vulnerability was found in libxml2. This issue occurs when parsing (invalid) XML schemas. • https://gitlab.gnome.org/GNOME/libxml2/-/issues/491 https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4 https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html https://security.netapp.com/advisory/ntap-20230601-0006 https://security.netapp.com/advisory/ntap-20240201-0005 https://access.redhat.com/security/cve/CVE-2023-28484 https://bugzilla.redhat.com/show_bug.cgi?id=2185994 • CWE-20: Improper Input Validation CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2023-29469 – libxml2: Hashing of empty dict strings isn't deterministic
https://notcve.org/view.php?id=CVE-2023-29469
An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value). A flaw was found in libxml2. This issue occurs when hashing empty strings which aren't null-terminated, xmlDictComputeFastKey could produce inconsistent results, which may lead to various logic or memory errors, including double free errors. • https://gitlab.gnome.org/GNOME/libxml2/-/issues/510 https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4 https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html https://security.netapp.com/advisory/ntap-20230601-0006 https://access.redhat.com/security/cve/CVE-2023-29469 https://bugzilla.redhat.com/show_bug.cgi?id=2185984 • CWE-20: Improper Input Validation CWE-415: Double Free •