NULL Pointer Dereference Affecting kernel-modules-core package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-RHEL9-KERNELMODULESCORE-6547650
- published27 Apr 2024
- disclosed3 Apr 2024
Introduced: 3 Apr 2024
CVE-2024-26695 (opens in a new tab)How to fix?
There is no fixed version for RHEL:9 kernel-modules-core.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-modules-core package and not the kernel-modules-core package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked
The SEV platform device can be shutdown with a null psp_master, e.g., using DEBUG_TEST_DRIVER_REMOVE. Found using KASAN:
[ 137.148210] ccp 0000:23:00.1: enabling device (0000 -> 0002) [ 137.162647] ccp 0000:23:00.1: no command queues available [ 137.170598] ccp 0000:23:00.1: sev enabled [ 137.174645] ccp 0000:23:00.1: psp enabled [ 137.178890] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI [ 137.182693] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7] [ 137.182693] CPU: 93 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc1+ #311 [ 137.182693] RIP: 0010:__sev_platform_shutdown_locked+0x51/0x180 [ 137.182693] Code: 08 80 3c 08 00 0f 85 0e 01 00 00 48 8b 1d 67 b6 01 08 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 00 00 00 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 fe 00 00 00 48 8b 9b f0 00 00 00 48 85 db 74 2c [ 137.182693] RSP: 0018:ffffc900000cf9b0 EFLAGS: 00010216 [ 137.182693] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000001e [ 137.182693] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000000000f0 [ 137.182693] RBP: ffffc900000cf9c8 R08: 0000000000000000 R09: fffffbfff58f5a66 [ 137.182693] R10: ffffc900000cf9c8 R11: ffffffffac7ad32f R12: ffff8881e5052c28 [ 137.182693] R13: ffff8881e5052c28 R14: ffff8881758e43e8 R15: ffffffffac64abf8 [ 137.182693] FS: 0000000000000000(0000) GS:ffff889de7000000(0000) knlGS:0000000000000000 [ 137.182693] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 137.182693] CR2: 0000000000000000 CR3: 0000001cf7c7e000 CR4: 0000000000350ef0 [ 137.182693] Call Trace: [ 137.182693] <TASK> [ 137.182693] ? show_regs+0x6c/0x80 [ 137.182693] ? __die_body+0x24/0x70 [ 137.182693] ? die_addr+0x4b/0x80 [ 137.182693] ? exc_general_protection+0x126/0x230 [ 137.182693] ? asm_exc_general_protection+0x2b/0x30 [ 137.182693] ? __sev_platform_shutdown_locked+0x51/0x180 [ 137.182693] sev_firmware_shutdown.isra.0+0x1e/0x80 [ 137.182693] sev_dev_destroy+0x49/0x100 [ 137.182693] psp_dev_destroy+0x47/0xb0 [ 137.182693] sp_destroy+0xbb/0x240 [ 137.182693] sp_pci_remove+0x45/0x60 [ 137.182693] pci_device_remove+0xaa/0x1d0 [ 137.182693] device_remove+0xc7/0x170 [ 137.182693] really_probe+0x374/0xbe0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] __driver_probe_device+0x199/0x460 [ 137.182693] driver_probe_device+0x4e/0xd0 [ 137.182693] __driver_attach+0x191/0x3d0 [ 137.182693] ? __pfx___driver_attach+0x10/0x10 [ 137.182693] bus_for_each_dev+0x100/0x190 [ 137.182693] ? __pfx_bus_for_each_dev+0x10/0x10 [ 137.182693] ? __kasan_check_read+0x15/0x20 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] ? _raw_spin_unlock+0x27/0x50 [ 137.182693] driver_attach+0x41/0x60 [ 137.182693] bus_add_driver+0x2a8/0x580 [ 137.182693] driver_register+0x141/0x480 [ 137.182693] __pci_register_driver+0x1d6/0x2a0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] ? esrt_sysfs_init+0x1cd/0x5d0 [ 137.182693] ? __pfx_sp_mod_init+0x10/0x10 [ 137.182693] sp_pci_init+0x22/0x30 [ 137.182693] sp_mod_init+0x14/0x30 [ 137.182693] ? __pfx_sp_mod_init+0x10/0x10 [ 137.182693] do_one_initcall+0xd1/0x470 [ 137.182693] ? __pfx_do_one_initcall+0x10/0x10 [ 137.182693] ? parameq+0x80/0xf0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] ? __kmalloc+0x3b0/0x4e0 [ 137.182693] ? kernel_init_freeable+0x92d/0x1050 [ 137.182693] ? kasan_populate_vmalloc_pte+0x171/0x190 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] kernel_init_freeable+0xa64/0x1050 [ 137.182693] ? __pfx_kernel_init+0x10/0x10 [ 137.182693] kernel_init+0x24/0x160 [ 137.182693] ? __switch_to_asm+0x3e/0x70 [ 137.182693] ret_from_fork+0x40/0x80 [ 137.182693] ? __pfx_kernel_init+0x1 ---truncated---
References
- https://access.redhat.com/security/cve/CVE-2024-26695
- https://git.kernel.org/stable/c/58054faf3bd29cd0b949b77efcb6157f66f401ed
- https://git.kernel.org/stable/c/7535ec350a5f09b5756a7607f5582913f21200f4
- https://git.kernel.org/stable/c/8731fe001a60581794ed9cf65da8cd304846a6fb
- https://git.kernel.org/stable/c/88aa493f393d2ee38ac140e1f6ac1881346e85d4
- https://git.kernel.org/stable/c/b5909f197f3b26aebedca7d8ac7b688fd993a266
- https://git.kernel.org/stable/c/ccb88e9549e7cfd8bcd511c538f437e20026e983
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html