CVSS: 6.7EPSS: 0%CPEs: 5EXPL: 0CVE-2023-52482 – x86/srso: Add SRSO mitigation for Hygon processors
https://notcve.org/view.php?id=CVE-2023-52482
In the Linux kernel, the following vulnerability has been resolved: x86/srso: Add SRSO mitigation for Hygon processors Add mitigation for the speculative return stack overflow vulnerability which exists on Hygon processors too. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: x86/srso: agregue mitigación SRSO para procesadores Hygon. Agregue mitigación para la vulnerabilidad de desbordamiento de pila de retorno especulativo que también existe en los procesadores Hygon. A vulnerability was found in the Linux kernel, where the Hygon x86 processor is susceptible to a speculative return stack overflow. • https://git.kernel.org/stable/c/e7ea043bc3f19473561c08565047b3f1671bf35d https://git.kernel.org/stable/c/f090a8b4d2e3ec6f318d6fdab243a2edc5a8cc37 https://git.kernel.org/stable/c/6ce2f297a7168274547d0b5aea6c7c16268b8a96 https://git.kernel.org/stable/c/cf43b304b6952b549d58feabc342807b334f03d4 https://git.kernel.org/stable/c/a5ef7d68cea1344cf524f04981c2b3f80bedbb0d https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://access.redhat.com/security/cve/CVE-2023-52482 https://bugzilla.redhat.com/show_bug.cgi?id=2267028 • CWE-562: Return of Stack Variable Address •
CVSS: 4.7EPSS: 0%CPEs: 3EXPL: 0CVE-2023-52481 – arm64: errata: Add Cortex-A520 speculative unprivileged load workaround
https://notcve.org/view.php?id=CVE-2023-52481
In the Linux kernel, the following vulnerability has been resolved: arm64: errata: Add Cortex-A520 speculative unprivileged load workaround Implement the workaround for ARM Cortex-A520 erratum 2966298. On an affected Cortex-A520 core, a speculatively executed unprivileged load might leak data from a privileged load via a cache side channel. The issue only exists for loads within a translation regime with the same translation (e.g. same ASID and VMID). Therefore, the issue only affects the return to EL0. The workaround is to execute a TLBI before returning to EL0 after all loads of privileged data. A non-shareable TLBI to any address is sufficient. The workaround isn't necessary if page table isolation (KPTI) is enabled, but for simplicity it will be. • https://git.kernel.org/stable/c/6e3ae2927b432a3b7c8374f14dbc1bd9ebe4372c https://git.kernel.org/stable/c/32b0a4ffcaea44a00a61e40c0d1bcc50362aee25 https://git.kernel.org/stable/c/471470bc7052d28ce125901877dd10e4c048e513 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2023-52480 – ksmbd: fix race condition between session lookup and expire
https://notcve.org/view.php?id=CVE-2023-52480
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix race condition between session lookup and expire Thread A + Thread B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sessions, sess->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // UAF! | sess->last_active = jiffies | + This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ksmbd: corrige la condición de ejecución entre la búsqueda de sesión y la caducidad del subproceso A + subproceso B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sesiones, sesión->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // ¡UAF! | sess->last_active = jiffies | + Este parche agrega rwsem para corregir la condición de ejecución entre ksmbd_session_lookup y ksmbd_expire_session. • https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f •
CVSS: 7.1EPSS: 0%CPEs: 4EXPL: 0CVE-2023-52479 – ksmbd: fix uaf in smb20_oplock_break_ack
https://notcve.org/view.php?id=CVE-2023-52479
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix uaf in smb20_oplock_break_ack drop reference after use opinfo. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: corrige uaf en smb20_oplock_break_ack elimina la referencia después de usar opinfo. • https://git.kernel.org/stable/c/694e13732e830cbbfedb562e57f28644927c33fd https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930 https://git.kernel.org/stable/c/d5b0e9d3563e7e314a850e81f42b2ef6f39882f9 https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce •
CVSS: 6.0EPSS: 0%CPEs: 8EXPL: 0CVE-2023-52478 – HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect
https://notcve.org/view.php?id=CVE-2023-52478
In the Linux kernel, the following vulnerability has been resolved: HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect hidpp_connect_event() has *four* time-of-check vs time-of-use (TOCTOU) races when it races with itself. hidpp_connect_event() primarily runs from a workqueue but it also runs on probe() and if a "device-connected" packet is received by the hw when the thread running hidpp_connect_event() from probe() is waiting on the hw, then a second thread running hidpp_connect_event() will be started from the workqueue. This opens the following races (note the below code is simplified): 1. Retrieving + printing the protocol (harmless race): if (!hidpp->protocol_major) { hidpp_root_get_protocol_version() hidpp->protocol_major = response.rap.params[0]; } We can actually see this race hit in the dmesg in the abrt output attached to rhbz#2227968: [ 3064.624215] logitech-hidpp-device 0003:046D:4071.0049: HID++ 4.5 device connected. [ 3064.658184] logitech-hidpp-device 0003:046D:4071.0049: HID++ 4.5 device connected. Testing with extra logging added has shown that after this the 2 threads take turn grabbing the hw access mutex (send_mutex) so they ping-pong through all the other TOCTOU cases managing to hit all of them: 2. Updating the name to the HIDPP name (harmless race): if (hidpp->name == hdev->name) { ... hidpp->name = new_name; } 3. Initializing the power_supply class for the battery (problematic!) • https://git.kernel.org/stable/c/ca0c4cc1d215dc22ab0e738c9f017c650f3183f5 https://git.kernel.org/stable/c/44481b244fcaa2b895a53081d6204c574720c38c https://git.kernel.org/stable/c/cd0e2bf7fb22fe9b989c59c42dca06367fd10e6b https://git.kernel.org/stable/c/093af62c023537f097d2ebdfaa0bc7c1a6e874e1 https://git.kernel.org/stable/c/28ddc1e0b898291323b62d770b1b931de131a528 https://git.kernel.org/stable/c/fd72ac9556a473fc7daf54efb6ca8a97180d621d https://git.kernel.org/stable/c/f7b2c7d9831af99369fe8ad9b2a68d78942f414e https://git.kernel.org/stable/c/dac501397b9d81e4782232c39f94f4307 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •