Alma Linux: CVE-2024-26947: Important: kernel security update (ALSA-2024-6997)
Description
In the Linux kernel, the following vulnerability has been resolved: ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses Since commit a4d5613c4dc6 ("arm: extend pfn_valid to take into account freed memory map alignment") changes the semantics of pfn_valid() to check presence of the memory map for a PFN. A valid page for an address which is reserved but not mapped by the kernel[1], the system crashed during some uio test with the following memory layout: node 0: [mem 0x00000000c0a00000-0x00000000cc8fffff] node 0: [mem 0x00000000d0000000-0x00000000da1fffff] the uio layout is:0xc0900000, 0x100000 the crash backtrace like: Unable to handle kernel paging request at virtual address bff00000 [...] CPU: 1 PID: 465 Comm: startapp.bin Tainted: G O 5.10.0 #1 Hardware name: Generic DT based system PC is at b15_flush_kern_dcache_area+0x24/0x3c LR is at __sync_icache_dcache+0x6c/0x98 [...] (b15_flush_kern_dcache_area) from (__sync_icache_dcache+0x6c/0x98) (__sync_icache_dcache) from (set_pte_at+0x28/0x54) (set_pte_at) from (remap_pfn_range+0x1a0/0x274) (remap_pfn_range) from (uio_mmap+0x184/0x1b8 [uio]) (uio_mmap [uio]) from (__mmap_region+0x264/0x5f4) (__mmap_region) from (__do_mmap_mm+0x3ec/0x440) (__do_mmap_mm) from (do_mmap+0x50/0x58) (do_mmap) from (vm_mmap_pgoff+0xfc/0x188) (vm_mmap_pgoff) from (ksys_mmap_pgoff+0xac/0xc4) (ksys_mmap_pgoff) from (ret_fast_syscall+0x0/0x5c) Code: e0801001 e2423001 e1c00003 f57ff04f (ee070f3e) ---[ end trace 09cf0734c3805d52 ]--- Kernel panic - not syncing: Fatal exception So check if PG_reserved was set to solve this issue. [1]: https://lore.kernel.org/lkml/Zbtdue57RO0QScJM@linux.ibm.com/
Solution(s)
- alma-upgrade-bpftool
- alma-upgrade-kernel
- alma-upgrade-kernel-64k
- alma-upgrade-kernel-64k-core
- alma-upgrade-kernel-64k-debug
- alma-upgrade-kernel-64k-debug-core
- alma-upgrade-kernel-64k-debug-devel
- alma-upgrade-kernel-64k-debug-devel-matched
- alma-upgrade-kernel-64k-debug-modules
- alma-upgrade-kernel-64k-debug-modules-core
- alma-upgrade-kernel-64k-debug-modules-extra
- alma-upgrade-kernel-64k-devel
- alma-upgrade-kernel-64k-devel-matched
- alma-upgrade-kernel-64k-modules
- alma-upgrade-kernel-64k-modules-core
- alma-upgrade-kernel-64k-modules-extra
- alma-upgrade-kernel-abi-stablelists
- alma-upgrade-kernel-core
- alma-upgrade-kernel-cross-headers
- alma-upgrade-kernel-debug
- alma-upgrade-kernel-debug-core
- alma-upgrade-kernel-debug-devel
- alma-upgrade-kernel-debug-devel-matched
- alma-upgrade-kernel-debug-modules
- alma-upgrade-kernel-debug-modules-core
- alma-upgrade-kernel-debug-modules-extra
- alma-upgrade-kernel-debug-uki-virt
- alma-upgrade-kernel-devel
- alma-upgrade-kernel-devel-matched
- alma-upgrade-kernel-doc
- alma-upgrade-kernel-headers
- alma-upgrade-kernel-modules
- alma-upgrade-kernel-modules-core
- alma-upgrade-kernel-modules-extra
- alma-upgrade-kernel-rt
- alma-upgrade-kernel-rt-core
- alma-upgrade-kernel-rt-debug
- alma-upgrade-kernel-rt-debug-core
- alma-upgrade-kernel-rt-debug-devel
- alma-upgrade-kernel-rt-debug-modules
- alma-upgrade-kernel-rt-debug-modules-core
- alma-upgrade-kernel-rt-debug-modules-extra
- alma-upgrade-kernel-rt-devel
- alma-upgrade-kernel-rt-modules
- alma-upgrade-kernel-rt-modules-core
- alma-upgrade-kernel-rt-modules-extra
- alma-upgrade-kernel-tools
- alma-upgrade-kernel-tools-libs
- alma-upgrade-kernel-tools-libs-devel
- alma-upgrade-kernel-uki-virt
- alma-upgrade-kernel-zfcpdump
- alma-upgrade-kernel-zfcpdump-core
- alma-upgrade-kernel-zfcpdump-devel
- alma-upgrade-kernel-zfcpdump-devel-matched
- alma-upgrade-kernel-zfcpdump-modules
- alma-upgrade-kernel-zfcpdump-modules-core
- alma-upgrade-kernel-zfcpdump-modules-extra
- alma-upgrade-libperf
- alma-upgrade-perf
- alma-upgrade-python3-perf
- alma-upgrade-rtla
- alma-upgrade-rv
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- Integrated Threat Feeds
- Easy-to-Use RESTful API
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- Automated Containment
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