| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-50224: spi: spi-fsl-dspi: Fix crash when not using GPIO chip select |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| spi: spi-fsl-dspi: Fix crash when not using GPIO chip select |
| |
| Add check for the return value of spi_get_csgpiod() to avoid passing a NULL |
| pointer to gpiod_direction_output(), preventing a crash when GPIO chip |
| select is not used. |
| |
| Fix below crash: |
| [ 4.251960] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 |
| [ 4.260762] Mem abort info: |
| [ 4.263556] ESR = 0x0000000096000004 |
| [ 4.267308] EC = 0x25: DABT (current EL), IL = 32 bits |
| [ 4.272624] SET = 0, FnV = 0 |
| [ 4.275681] EA = 0, S1PTW = 0 |
| [ 4.278822] FSC = 0x04: level 0 translation fault |
| [ 4.283704] Data abort info: |
| [ 4.286583] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 |
| [ 4.292074] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 |
| [ 4.297130] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 |
| [ 4.302445] [0000000000000000] user address but active_mm is swapper |
| [ 4.308805] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP |
| [ 4.315072] Modules linked in: |
| [ 4.318124] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc4-next-20241023-00008-ga20ec42c5fc1 #359 |
| [ 4.328130] Hardware name: LS1046A QDS Board (DT) |
| [ 4.332832] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) |
| [ 4.339794] pc : gpiod_direction_output+0x34/0x5c |
| [ 4.344505] lr : gpiod_direction_output+0x18/0x5c |
| [ 4.349208] sp : ffff80008003b8f0 |
| [ 4.352517] x29: ffff80008003b8f0 x28: 0000000000000000 x27: ffffc96bcc7e9068 |
| [ 4.359659] x26: ffffc96bcc6e00b0 x25: ffffc96bcc598398 x24: ffff447400132810 |
| [ 4.366800] x23: 0000000000000000 x22: 0000000011e1a300 x21: 0000000000020002 |
| [ 4.373940] x20: 0000000000000000 x19: 0000000000000000 x18: ffffffffffffffff |
| [ 4.381081] x17: ffff44740016e600 x16: 0000000500000003 x15: 0000000000000007 |
| [ 4.388221] x14: 0000000000989680 x13: 0000000000020000 x12: 000000000000001e |
| [ 4.395362] x11: 0044b82fa09b5a53 x10: 0000000000000019 x9 : 0000000000000008 |
| [ 4.402502] x8 : 0000000000000002 x7 : 0000000000000007 x6 : 0000000000000000 |
| [ 4.409641] x5 : 0000000000000200 x4 : 0000000002000000 x3 : 0000000000000000 |
| [ 4.416781] x2 : 0000000000022202 x1 : 0000000000000000 x0 : 0000000000000000 |
| [ 4.423921] Call trace: |
| [ 4.426362] gpiod_direction_output+0x34/0x5c (P) |
| [ 4.431067] gpiod_direction_output+0x18/0x5c (L) |
| [ 4.435771] dspi_setup+0x220/0x334 |
| |
| The Linux kernel CVE team has assigned CVE-2024-50224 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.4 with commit 9e264f3f85a56cc109cc2d6010a48aa89d5c1ff1 and fixed in 6.6.60 with commit e79c1f1c9100b4adc91c6512985db2cc961aafaa |
| Issue introduced in 6.4 with commit 9e264f3f85a56cc109cc2d6010a48aa89d5c1ff1 and fixed in 6.11.7 with commit 89f74c968319d040739d6238e1c3a4caa16a5a00 |
| Issue introduced in 6.4 with commit 9e264f3f85a56cc109cc2d6010a48aa89d5c1ff1 and fixed in 6.12 with commit 25f00a13dccf8e45441265768de46c8bf58e08f6 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-50224 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/spi/spi-fsl-dspi.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/e79c1f1c9100b4adc91c6512985db2cc961aafaa |
| https://git.kernel.org/stable/c/89f74c968319d040739d6238e1c3a4caa16a5a00 |
| https://git.kernel.org/stable/c/25f00a13dccf8e45441265768de46c8bf58e08f6 |
