CVE-2024-42241 mm/shmem: disable PMD-sized page cache if needed

In the Linux kernel, the following vulnerability has been resolved: mm/shmem: disable PMD-sized page cache if needed For shmem files, it's possible that PMD-sized page cache can't be supported by xarray. For example, 512MB page cache on ARM64 when the base page size is 64KB can't be supported by...

CVE-2024-42240 x86/bhi: Avoid warning in #DB handler due to BHI mitigation

In the Linux kernel, the following vulnerability has been resolved: x86/bhi: Avoid warning in DB handler due to BHI mitigation When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set then entrySYSENTERcompat uses CLEARBRANCHHISTORY and calls the clearbhbloop before the TF flag...

Linux DRM drm_file_update_pid() Race Condition / Use-After-Free Exploit

Linux DRM has drmfileupdatepid call to getpid too late, which creates a race condition that can lead to use-after-free issue of a struct pid. Linux: DRM: refcount incremented too late in drmfileupdatepid I am sending this to security@ and to the drm-misc maintainers - based on...

The vulnerability of the drm_file_update_pid() function in the video driver of the Linux operating system allows a hacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the drmfileupdatepid function in the drivers/gpu/drm/drmfile.c video driver of the Linux operating system is related to the reutilization of previously freed memory due to competitive access to resources race condition. Exploiting this vulnerability can allow an attacker to...

Linux DRM drm_file_update_pid() Race Condition / Use-After-Free

Linux: DRM: refcount incremented too late in drmfileupdatepid I am sending this to security@ and to the drm-misc maintainers - based on https://drm.pages.freedesktop.org/maintainer-tools/committer-drm-misc.htmlmerge-criteria I think this falls into drm-misc's area of responsibility? === summary =...

CVE-2024-42082 xdp: Remove WARN() from __xdp_reg_mem_model()

In the Linux kernel, the following vulnerability has been resolved: xdp: Remove WARN from xdpregmemmodel syzkaller reports a warning in xdpregmemmodel. The warning occurs only if memidinithashtable returns an error. It returns the error in two cases: 1. memory allocation fails; 2. rhashtableinit...

CVE-2024-41068 s390/sclp: Fix sclp_init() cleanup on failure

In the Linux kernel, the following vulnerability has been resolved: s390/sclp: Fix sclpinit cleanup on failure If sclpinit fails it only partially cleans up: if there are multiple failing calls to sclpinit sclpstatechangeevent will be added several times to sclpreglist, which results in the...

CVE-2024-41058 cachefiles: fix slab-use-after-free in fscache_withdraw_volume()

In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix slab-use-after-free in fscachewithdrawvolume We got the following issue in our fault injection stress test: ================================================================== BUG: KASAN: slab-use-after-free in...

CVE-2024-41031

CVE-2024-41031 (Linux kernel) affects ARM64 builds where HPAGE_PMD_ORDER is 13 for 64KB base pages. The vulnerability arises in mm/filemap when the PMD-sized page cache cannot be supported by xarray, triggering kernel warnings and a broken path during page cache handling. The impact is described ...

CVE-2024-41027

CVE-2024-41027 affects the Linux kernel userfaultfd API. The issue arises when a feature not enabled in kernel config is requested: instead of returning an error, the kernel silently lists all features, potentially triggering a warning (as seen in zap_pte_range mortgage path). The fix is to have ...

CVE-2022-48825

In the Linux kernel, the following vulnerability has been resolved: scsi: qedf: Add stagwork to all the vports Call trace seen when creating NPIV ports, only 32 out of 64 show online. stag work was not initialized for vport, hence initialize the stag work. WARNING: CPU: 8 PID: 645 at...

CVE-2022-48848 tracing/osnoise: Do not unregister events twice

In the Linux kernel, the following vulnerability has been resolved: tracing/osnoise: Do not unregister events twice Nicolas reported that using: trace-cmd record -e all -M 10 -p osnoise --poll Resulted in the following kernel warning: ------------ cut here ------------ WARNING: CPU: 0 PID: 1217 a...

CVE-2022-48833

In the Linux kernel, the following vulnerability has been resolved: btrfs: skip reserved bytes warning on unmount after log cleanup failure After the recent changes made by commit c2e39305299f01 "btrfs: clear extent buffer uptodate when we fail to write it" and its followup fix, commit...

CVE-2022-48795 parisc: Fix data TLB miss in sba_unmap_sg

In the Linux kernel, the following vulnerability has been resolved: parisc: Fix data TLB miss in sbaunmapsg Rolf Eike Beer reported the following bug: 1274934.746891 Bad Address null pointer deref?: Code=15 Data TLB miss fault at addr 0000004140000018 1274934.746891 CPU: 3 PID: 5549 Comm: cmake N...

CVE-2021-47623

CVE-2021-47623 affects the PowerPC path in the Linux kernel where unmapping a fixmap entry via __set_fixmap() (FIXMAP_PAGE_CLEAR) ends up calling map_kernel_page(), which fails if invoked a second time for the same page. The connected documents confirm the root cause in arch/powerpc/mm/pgtable.c ...

CVE-2022-48781

In the Linux kernel, the following vulnerability has been resolved: crypto: afalg - get rid of algmemoryallocated algmemoryallocated does not seem to be really used. algproto does have a .memoryallocated field, but no corresponding .sysctlmem. This means skhasaccount returns true, but all...

CVE-2024-40916

In the Linux kernel, the following vulnerability has been resolved: drm/exynos: hdmi: report safe 640x480 mode as a fallback when no EDID found When reading EDID fails and driver reports no modes available, the DRM core adds an artificial 1024x786 mode to the connector. Unfortunately some variant...

CVE-2024-39500

In the Linux kernel, the following vulnerability has been resolved: sockmap: avoid race between sockmapclose and skpsockput skpsockget will return NULL if the refcount of psock has gone to 0, which will happen when the last call of skpsockput is done. However, skpsockdrop may not have finished ye...

CVE-2024-40958

In the Linux kernel, the following vulnerability has been resolved: netns: Make getnetns handle zero refcount net Syzkaller hit a warning: refcountt: addition on 0; use-after-free. WARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcountwarnsaturate+0xdf/0x1d0 Modules linked in: CPU: 3 PID: 7890...

CVE-2024-40906

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Always stop health timer during driver removal Currently, if teardownhca fails to execute during driver removal, mlx5 does not stop the health timer. Afterwards, mlx5 continue with driver teardown. This may lead to a UA...