# CVE-2023-53093: tracing: Do not let histogram values have some modifiers CVE-2023-53093 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2023-53093, released May 2, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-53093 - Priority: Routine - CVSS: 5.5 (Moderate) - EPSS: 0.0020 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 2, 2025 - Weakness: NULL Pointer Dereference - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-53093 ## Description In the Linux kernel, the following vulnerability has been resolved: tracing: Do not let histogram values have some modifiers Histogram values can not be strings, stacktraces, graphs, symbols, syscalls, or grouped in buckets or log. Give an error if a value is set to do so. Note, the histogram code was not prepared to handle these modifiers for histograms and caused a bug. Mark Rutland reported: # echo 'p:copy_to_user __arch_copy_to_user n=$arg2' >> /sys/kernel/tracing/kprobe_events # echo 'hist:keys=n:vals=hitcount.buckets=8:sort=hitcount' > /sys/kernel/tracing/events/kprobes/copy_to_user/trigger # cat /sys/kernel/tracing/events/kprobes/copy_to_user/hist [ 143.694628] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 143.695190] Mem abort info: [ 143.695362] ESR = 0x0000000096000004 [ 143.695604] EC = 0x25: DABT (current EL), IL = 32 bits [ 143.695889] SET = 0, FnV = 0 [ 143.696077] EA = 0, S1PTW = 0 [ 143.696302] FSC = 0x04: level 0 translation fault [ 143.702381] Data abort info: [ 143.702614] ISV = 0, ISS = 0x00000004 [ 143.702832] CM = 0, WnR = 0 [ 143.703087] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000448f9000 [ 143.703407] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 [ 143.704137] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [ 143.704714] Modules linked in: [ 143.705273] CPU: 0 PID: 133 Comm: cat Not tainted 6.2.0-00003-g6fc512c10a7c #3 [ 143.706138] Hardware name: linux,dummy-virt (DT) [ 143.706723] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 143.707120] pc : hist_field_name.part.0+0x14/0x140 [ 143.707504] lr : hist_field_name.part.0+0x104/0x140 [ 143.707774] sp : ffff800008333a30 [ 143.707952] x29: ffff800008333a30 x28: 0000000000000001 x27: 0000000000400cc0 [ 143.708429] x26: ffffd7a653b20260 x25: 0000000000000000 x24: ffff10d303ee5800 [ 143.708776] x23: ffffd7a6539b27b0 x22: ffff10d303fb8c00 x21: 0000000000000001 [ 143.709127] x20: ffff10d303ec2000 x19: 0000000000000000 x18: 0000000000000000 [ 143.709478] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 143.709824] x14: 0000000000000000 x13: 203a6f666e692072 x12: 6567676972742023 [ 143.710179] x11: 0a230a6d6172676f x10: 000000000000002c x9 : ffffd7a6521e018c [ 143.710584] x8 : 000000000000002c x7 : 7f7f7f7f7f7f7f7f x6 : 000000000000002c [ 143.710915] x5 : ffff10d303b0103e x4 : ffffd7a653b20261 x3 : 000000000000003d [ 143.711239] x2 : 0000000000020001 x1 : 0000000000000001 x0 : 0000000000000000 [ 143.711746] Call trace: [ 143.712115] hist_field_name.part.0+0x14/0x140 [ 143.712642] hist_field_name.part.0+0x104/0x140 [ 143.712925] hist_field_print+0x28/0x140 [ 143.713125] event_hist_trigger_print+0x174/0x4d0 [ 143.713348] hist_show+0xf8/0x980 [ 143.713521] seq_read_iter+0x1bc/0x4b0 [ 143.713711] seq_read+0x8c/0xc4 [ 143.713876] vfs_read+0xc8/0x2a4 [ 143.714043] ksys_read+0x70/0xfc [ 143.714218] __arm64_sys_read+0x24/0x30 [ 143.714400] invoke_syscall+0x50/0x120 [ 143.714587] el0_svc_common.constprop.0+0x4c/0x100 [ 143.714807] do_el0_svc+0x44/0xd0 [ 143.714970] el0_svc+0x2c/0x84 [ 143.715134] el0t_64_sync_handler+0xbc/0x140 [ 143.715334] el0t_64_sync+0x190/0x194 [ 143.715742] Code: a9bd7bfd 910003fd a90153f3 aa0003f3 (f9400000) [ 143.716510] ---[ end trace 0000000000000000 ]--- Segmentation fault ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-debuginfo amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-devel amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-headers amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-libbpf amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-livepatch-6.1.23-36.46 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-tools amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | kernel-tools-devel amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | linux Debian 12.15 (bookworm) | 6.1.25-1 | [DEBIAN-CVE-2023-53093](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53093.md) | May 2, 2025 | | Linux | linux Debian 13.5 (trixie) | 6.1.25-1 | [DEBIAN-CVE-2023-53093](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53093.md) | May 2, 2025 | | Linux | linux Debian 14 | 6.1.25-1 | [DEBIAN-CVE-2023-53093](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53093.md) | May 2, 2025 | | Linux | perf amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | perf-debuginfo amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | python3-perf amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.23-36.46.amzn2023 | [ALAS2023-2025-1054](https://patchblox.com/security/data/fix/linux/alas2023-2025-1054.md) | Jul 1, 2025 | --- Data as of 2026-11-09T19:38:12Z UTC. 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