CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2023-52511 – spi: sun6i: reduce DMA RX transfer width to single byte
https://notcve.org/view.php?id=CVE-2023-52511
In the Linux kernel, the following vulnerability has been resolved: spi: sun6i: reduce DMA RX transfer width to single byte Through empirical testing it has been determined that sometimes RX SPI transfers with DMA enabled return corrupted data. This is down to single or even multiple bytes lost during DMA transfer from SPI peripheral to memory. It seems the RX FIFO within the SPI peripheral can become confused when performing bus read accesses wider than a single byte to it during an active SPI transfer. This patch reduces the width of individual DMA read accesses to the RX FIFO to a single byte to mitigate that issue. • https://git.kernel.org/stable/c/ff05ed4ae214011464a0156f05cac1b0b46b5fbc https://git.kernel.org/stable/c/e15bb292b24630ee832bfc7fd616bd72c7682bbb https://git.kernel.org/stable/c/b3c21c9c7289692f4019f163c3b06d8bdf78b355 https://git.kernel.org/stable/c/171f8a49f212e87a8b04087568e1b3d132e36a18 •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-52508 – nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid()
https://notcve.org/view.php?id=CVE-2023-52508
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid() The nvme_fc_fcp_op structure describing an AEN operation is initialized with a null request structure pointer. An FC LLDD may make a call to nvme_fc_io_getuuid passing a pointer to an nvmefc_fcp_req for an AEN operation. Add validation of the request structure pointer before dereference. • https://git.kernel.org/stable/c/be90c9e29dd59b7d19a73297a1590ff3ec1d22ea https://git.kernel.org/stable/c/dd46b3ac7322baf3772b33b29726e94f98289db7 https://git.kernel.org/stable/c/8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c • CWE-476: NULL Pointer Dereference •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2023-52507 – nfc: nci: assert requested protocol is valid
https://notcve.org/view.php?id=CVE-2023-52507
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: assert requested protocol is valid The protocol is used in a bit mask to determine if the protocol is supported. Assert the provided protocol is less than the maximum defined so it doesn't potentially perform a shift-out-of-bounds and provide a clearer error for undefined protocols vs unsupported ones. • https://git.kernel.org/stable/c/6a2968aaf50c7a22fced77a5e24aa636281efca8 https://git.kernel.org/stable/c/2c231a247a1d1628e41fa1eefd1a5307c41c5f53 https://git.kernel.org/stable/c/a686f84101680b8442181a8846fbd3c934653729 https://git.kernel.org/stable/c/95733ea130e35ef9ec5949a5908dde3feaba92cb https://git.kernel.org/stable/c/a424807d860ba816aaafc3064b46b456361c0802 https://git.kernel.org/stable/c/25dd54b95abfdca423b65a4ee620a774777d8213 https://git.kernel.org/stable/c/853dda54ba59ea70d5580a298b7ede4707826848 https://git.kernel.org/stable/c/6584eba7688dcf999542778b07f63828c •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2023-52506 – LoongArch: Set all reserved memblocks on Node#0 at initialization
https://notcve.org/view.php?id=CVE-2023-52506
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Set all reserved memblocks on Node#0 at initialization After commit 61167ad5fecdea ("mm: pass nid to reserve_bootmem_region()") we get a panic if DEFERRED_STRUCT_PAGE_INIT is enabled: [ 0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18 [ 0.000000] Oops[#1]: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0+ #733 [ 0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90 [ 0.000000] a0 0000000000000001 a1 0000000000200000 a2 0000000000000040 a3 90000000046f7ca0 [ 0.000000] a4 90000000046f7ca4 a5 0000000000000000 a6 90000000046f7c38 a7 0000000000000000 [ 0.000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800 [ 0.000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20 [ 0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 0000000000000000 s0 fffffefffe000000 [ 0.000000] s1 0000000000000000 s2 0000000000000080 s3 0000000000000040 s4 0000000000000000 [ 0.000000] s5 0000000000000000 s6 fffffefffe000000 s7 900000000470b740 s8 9000000004ad4000 [ 0.000000] ra: 90000000040e3f18 reserve_bootmem_region+0xec/0x21c [ 0.000000] ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c [ 0.000000] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 0.000000] PRMD: 00000000 (PPLV0 -PIE -PWE) [ 0.000000] EUEN: 00000000 (-FPE -SXE -ASXE -BTE) [ 0.000000] ECFG: 00070800 (LIE=11 VS=7) [ 0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EsubCode=0) [ 0.000000] BADV: 0000000000002b82 [ 0.000000] PRID: 0014d000 (Loongson-64bit, Loongson-3A6000) [ 0.000000] Modules linked in: [ 0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____)) [ 0.000000] Stack : 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00 [ 0.000000] 900000000470e000 90000000002c1918 0000000000000000 9000000004110780 [ 0.000000] 00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748 [ 0.000000] 0000000000000000 900000000421ca84 9000000004620000 9000000004564970 [ 0.000000] 90000000046f7d78 9000000002cc9f70 90000000002c1918 900000000470e000 [ 0.000000] 9000000004564970 90000000040bc0e0 90000000046f7d78 0000000000000000 [ 0.000000] 0000000000004000 90000000045ccd00 0000000000000000 90000000002c1918 [ 0.000000] 90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000 [ 0.000000] 90000000046200a8 90000000046200a8 0000000000000000 9000000004218b2c [ 0.000000] 9000000004270008 0000000000000001 0000000000000000 90000000045ccd00 [ 0.000000] ... [ 0.000000] Call Trace: [ 0.000000] [<90000000040e3f28>] reserve_bootmem_region+0xfc/0x21c [ 0.000000] [<900000000421ca84>] memblock_free_all+0x114/0x350 [ 0.000000] [<9000000004218b2c>] mm_core_init+0x138/0x3cc [ 0.000000] [<9000000004200e38>] start_kernel+0x488/0x7a4 [ 0.000000] [<90000000040df0d8>] kernel_entry+0xd8/0xdc [ 0.000000] [ 0.000000] Code: 02eb21ad 00410f4c 380c31ac <262b818d> 6800b70d 02c1c196 0015001c 57fe4bb1 260002cd The reason is early memblock_reserve() in memblock_init() set node id to MAX_NUMNODES, making NODE_DATA(nid) a NULL dereference in the call chain reserve_bootmem_region() -> init_reserved_page(). After memblock_init(), those late calls of memblock_reserve() operate on subregions of memblock .memory regions. As a result, these reserved regions will be set to the correct node at the first iteration of memmap_init_reserved_pages(). So set all reserved memblocks on Node#0 at initialization can avoid this panic. • https://git.kernel.org/stable/c/f105e893a8edd48bdf4bef9fef845a9ff402f737 https://git.kernel.org/stable/c/19878758accf6b2788091a771d9f9fee7bab11ab https://git.kernel.org/stable/c/b795fb9f5861ee256070d59e33130980a01fadd7 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2023-52501 – ring-buffer: Do not attempt to read past "commit"
https://notcve.org/view.php?id=CVE-2023-52501
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not attempt to read past "commit" When iterating over the ring buffer while the ring buffer is active, the writer can corrupt the reader. There's barriers to help detect this and handle it, but that code missed the case where the last event was at the very end of the page and has only 4 bytes left. The checks to detect the corruption by the writer to reads needs to see the length of the event. If the length in the first 4 bytes is zero then the length is stored in the second 4 bytes. But if the writer is in the process of updating that code, there's a small window where the length in the first 4 bytes could be zero even though the length is only 4 bytes. That will cause rb_event_length() to read the next 4 bytes which could happen to be off the allocated page. To protect against this, fail immediately if the next event pointer is less than 8 bytes from the end of the commit (last byte of data), as all events must be a minimum of 8 bytes anyway. • https://git.kernel.org/stable/c/cee5151c5410e868826b8afecfb356f3799ebea3 https://git.kernel.org/stable/c/344f2f3e61a90f0150c754796ec9a17fcaeec03d https://git.kernel.org/stable/c/b08a4938229dbb530a35c41b83002a1457c6ff49 https://git.kernel.org/stable/c/75fc9e99b3a71006720ad1e029db11a4b5c32d4a https://git.kernel.org/stable/c/95a404bd60af6c4d9d8db01ad14fe8957ece31ca •