CVSS: 6.1EPSS: 0%CPEs: 6EXPL: 0CVE-2024-26610 – wifi: iwlwifi: fix a memory corruption
https://notcve.org/view.php?id=CVE-2024-26610
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: fix a memory corruption iwl_fw_ini_trigger_tlv::data is a pointer to a __le32, which means that if we copy to iwl_fw_ini_trigger_tlv::data + offset while offset is in bytes, we'll write past the buffer. En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: corrige una corrupción de memoria iwl_fw_ini_trigger_tlv::data es un puntero a un __le32, lo que significa que si copiamos a iwl_fw_ini_trigger_tlv::data + offset mientras el offset está en bytes, escribiremos más allá del búfer. A memory corruption flaw was found in the Linux kernel Intel Wireless WiFi Next Gen AGN module. This issue could allow a local user to crash the system. • https://git.kernel.org/stable/c/cf29c5b66b9f83939367d90679eb68cdfa2f0356 https://git.kernel.org/stable/c/05dd9facfb9a1e056752c0901c6e86416037d15a https://git.kernel.org/stable/c/99a23462fe1a6f709f0fda3ebbe8b6b193ac75bd https://git.kernel.org/stable/c/aa2cc9363926991ba74411e3aa0a0ea82c1ffe32 https://git.kernel.org/stable/c/870171899d75d43e3d14360f3a4850e90a9c289b https://git.kernel.org/stable/c/f32a81999d0b8e5ce60afb5f6a3dd7241c17dd67 https://git.kernel.org/stable/c/cf4a0d840ecc72fcf16198d5e9c505ab7d5a5e4d https://lists.debian.org/debian-lts-announce/2024/06/ • CWE-680: Integer Overflow to Buffer Overflow •
CVSS: 4.4EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52498 – PM: sleep: Fix possible deadlocks in core system-wide PM code
https://notcve.org/view.php?id=CVE-2023-52498
In the Linux kernel, the following vulnerability has been resolved: PM: sleep: Fix possible deadlocks in core system-wide PM code It is reported that in low-memory situations the system-wide resume core code deadlocks, because async_schedule_dev() executes its argument function synchronously if it cannot allocate memory (and not only in that case) and that function attempts to acquire a mutex that is already held. Executing the argument function synchronously from within dpm_async_fn() may also be problematic for ordering reasons (it may cause a consumer device's resume callback to be invoked before a requisite supplier device's one, for example). Address this by changing the code in question to use async_schedule_dev_nocall() for scheduling the asynchronous execution of device suspend and resume functions and to directly run them synchronously if async_schedule_dev_nocall() returns false. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PM: suspensión: soluciona posibles bloqueos en el código PM de todo el sistema central. Se informa que en situaciones de poca memoria, el código central de reanudación de todo el sistema se bloquea porque async_schedule_dev() ejecuta su el argumento funciona sincrónicamente si no puede asignar memoria (y no solo en ese caso) y esa función intenta adquirir un mutex que ya está retenido. La ejecución de la función de argumento sincrónicamente desde dpm_async_fn() también puede ser problemática por razones de pedido (puede causar que la devolución de llamada de currículum de un dispositivo consumidor se invoque antes que la de un dispositivo proveedor requerido, por ejemplo). • https://git.kernel.org/stable/c/f46eb832389f162ad13cb780d0b8cde93641990d https://git.kernel.org/stable/c/a1d62c775b07213c73f81ae842424c74dd14b5f0 https://git.kernel.org/stable/c/e1c9d32c98309ae764893a481552d3f99d46cb34 https://git.kernel.org/stable/c/e681e29d1f59a04ef773296e4bebb17b1b79f8fe https://git.kernel.org/stable/c/9bd3dce27b01c51295b60e1433e1dadfb16649f7 https://git.kernel.org/stable/c/7839d0078e0d5e6cc2fa0b0dfbee71de74f1e557 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://access.redhat.com/security/cve/CVE-2023 • CWE-833: Deadlock •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2023-52497 – erofs: fix lz4 inplace decompression
https://notcve.org/view.php?id=CVE-2023-52497
In the Linux kernel, the following vulnerability has been resolved: erofs: fix lz4 inplace decompression Currently EROFS can map another compressed buffer for inplace decompression, that was used to handle the cases that some pages of compressed data are actually not in-place I/O. However, like most simple LZ77 algorithms, LZ4 expects the compressed data is arranged at the end of the decompressed buffer and it explicitly uses memmove() to handle overlapping: __________________________________________________________ |_ direction of decompression --> ____ |_ compressed data _| Although EROFS arranges compressed data like this, it typically maps two individual virtual buffers so the relative order is uncertain. Previously, it was hardly observed since LZ4 only uses memmove() for short overlapped literals and x86/arm64 memmove implementations seem to completely cover it up and they don't have this issue. Juhyung reported that EROFS data corruption can be found on a new Intel x86 processor. After some analysis, it seems that recent x86 processors with the new FSRM feature expose this issue with "rep movsb". Let's strictly use the decompressed buffer for lz4 inplace decompression for now. Later, as an useful improvement, we could try to tie up these two buffers together in the correct order. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs: corrige la descompresión in situ de lz4 Actualmente, EROFS puede asignar otro búfer comprimido para la descompresión in situ, que se utilizó para manejar los casos en que algunas páginas de datos comprimidos en realidad no están in situ I/ o. Sin embargo, como la mayoría de los algoritmos LZ77 simples, LZ4 espera que los datos comprimidos estén organizados al final del buffer descomprimido y usa explícitamente memmove() para manejar la superposición: ________________________________________________________ |_ dirección de descompresión --> ____ |_ datos comprimidos _| Aunque EROFS organiza los datos comprimidos de esta manera, normalmente asigna dos buffers virtuales individuales, por lo que el orden relativo es incierto. • https://git.kernel.org/stable/c/0ffd71bcc3a03ebb3551661a36052488369c4de9 https://git.kernel.org/stable/c/9ff2d260b25df6fe1341a79113d88fecf6bd553e https://git.kernel.org/stable/c/a0180e940cf1aefa7d516e20b259ad34f7a8b379 https://git.kernel.org/stable/c/77cbc04a1a8610e303a0e0d74f2676667876a184 https://git.kernel.org/stable/c/33bf23c9940dbd3a22aad7f0cda4c84ed5701847 https://git.kernel.org/stable/c/f36d200a80a3ca025532ed60dd1ac21b620e14ae https://git.kernel.org/stable/c/bffc4cc334c5bb31ded54bc3cfd651735a3cb79e https://git.kernel.org/stable/c/3c12466b6b7bf1e56f9b32c366a3d83d8 •
CVSS: 4.4EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52492 – dmaengine: fix NULL pointer in channel unregistration function
https://notcve.org/view.php?id=CVE-2023-52492
In the Linux kernel, the following vulnerability has been resolved: dmaengine: fix NULL pointer in channel unregistration function __dma_async_device_channel_register() can fail. In case of failure, chan->local is freed (with free_percpu()), and chan->local is nullified. When dma_async_device_unregister() is called (because of managed API or intentionally by DMA controller driver), channels are unconditionally unregistered, leading to this NULL pointer: [ 1.318693] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0 [...] [ 1.484499] Call trace: [ 1.486930] device_del+0x40/0x394 [ 1.490314] device_unregister+0x20/0x7c [ 1.494220] __dma_async_device_channel_unregister+0x68/0xc0 Look at dma_async_device_register() function error path, channel device unregistration is done only if chan->local is not NULL. Then add the same condition at the beginning of __dma_async_device_channel_unregister() function, to avoid NULL pointer issue whatever the API used to reach this function. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: dmaengine: corrige el puntero NULL en la función de cancelación del registro del canal __dma_async_device_channel_register() puede fallar. En caso de falla, chan->local se libera (con free_percpu()) y chan->local se anula. Cuando se llama a dma_async_device_unregister() (debido a una API administrada o intencionalmente por el controlador del controlador DMA), los canales se anulan incondicionalmente, lo que lleva a este puntero NULL: [1.318693] No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 00000000000000d0 [...] [ 1.484499] Seguimiento de llamadas: [ 1.486930] device_del+0x40/0x394 [ 1.490314] device_unregister+0x20/0x7c [ 1.494220] __dma_async_device_channel_unregister+0x68/0xc0 Mire la ruta de error de la función dma_async_device_register(), cancelación del registro del dispositivo La ración se realiza sólo si chan->local es no nulo. • https://git.kernel.org/stable/c/d2fb0a0438384fee08a418025f743913020033ce https://git.kernel.org/stable/c/9de69732dde4e443c1c7f89acbbed2c45a6a8e17 https://git.kernel.org/stable/c/047fce470412ab64cb7345f9ff5d06919078ad79 https://git.kernel.org/stable/c/2ab32986a0b9e329eb7f8f04dd57cc127f797c08 https://git.kernel.org/stable/c/7f0ccfad2031eddcc510caf4e57f2d4aa2d8a50b https://git.kernel.org/stable/c/9263fd2a63487c6d04cbb7b74a48fb12e1e352d0 https://git.kernel.org/stable/c/f5c24d94512f1b288262beda4d3dcb9629222fc7 https://lists.debian.org/debian-lts-announce/2024/06/ • CWE-476: NULL Pointer Dereference •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52491 – media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run
https://notcve.org/view.php?id=CVE-2023-52491
In the Linux kernel, the following vulnerability has been resolved: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work. In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish. There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug. CPU0 CPU1 mtk_jpeg_dec_... | start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence. Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: medio: mtk-jpeg: Se corrigió el error de use-after-free debido al manejo de la ruta de error en mtk_jpeg_dec_device_run En mtk_jpeg_probe, &jpeg->job_timeout_work está vinculado con mtk_jpeg_job_timeout_work. • https://git.kernel.org/stable/c/b2f0d2724ba477d326e9d654d4db1c93e98f8b93 https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9 https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590 https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6 https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7 https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e https://lists.debian.org/debian-lts-announce/2024/06/ •