CVE-2022-50497

binfmt_misc: fix shift-out-of-bounds in check_special_flags

HIGH

7.1

CVSS Score

Published: October 4, 2025 at 03:43 PM UTC

Updated: June 17, 2026 at 05:23 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.1

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: binfmt_misc: fix shift-out-of-bounds in check_special_flags UBSAN reported a shift-out-of-bounds warning: left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8d/0xcf lib/dump_stack.c:106 ubsan_epilogue+0xa/0x44 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds+0x1e7/0x208 lib/ubsan.c:322 check_special_flags fs/binfmt_misc.c:241 [inline] create_entry fs/binfmt_misc.c:456 [inline] bm_register_write+0x9d3/0xa20 fs/binfmt_misc.c:654 vfs_write+0x11e/0x580 fs/read_write.c:582 ksys_write+0xcf/0x120 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x34/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4194e1 Since the type of Node's flags is unsigned long, we should define these macros with same type too.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.12 ≤ v < 4.14.3032.6.12 ≤ v < 4.19.2702.6.12 ≤ v < 4.9.3372.6.12 ≤ v < 5.10.1632.6.12 ≤ v < 5.15.862.6.12 ≤ v < 5.4.2292.6.12 ≤ v < 6.0.162.6.12 ≤ v < 6.1.22.6.12 ≤ v < 6.22.6.12.1 ≤ v < 4.9.3374.10 ≤ v < 4.14.3034.15 ≤ v < 4.19.2704.20 ≤ v < 5.4.2295.11 ≤ v < 5.15.865.16 ≤ v < 6.0.165.5 ≤ v < 5.10.1636.1 ≤ v < 6.1.21da177e4c3f41524e886b7f1b8a0c1fc7321cac2 2.6.12 2.6.12 rc2 2.6.12 rc3 2.6.12 rc4 2.6.12 rc5

Vendor states this is fixed in 0f1a48994b3e516d5c7fd5d12204fdba7a604771 (fixed)

Vendor states this is fixed in 419b808504c26b3e3342365f34ccd0843e09a7f8 (fixed)

Vendor states this is fixed in 6a46bf558803dd2b959ca7435a5c143efe837217 (fixed)

Vendor states this is fixed in 88cea1676a09f7c45a1438153a126610c33b1590 (fixed)

Vendor states this is fixed in 97382a2639b1cd9631f6069061e9d7062cd2b098 (fixed)

Vendor states this is fixed in a651bb5ff997b9f02662bcdef3d8b4e6f0d79656 (fixed)

Vendor states this is fixed in a91123d4bda463469f68f0427adabf8108001f94 (fixed)

Vendor states this is fixed in dcbc51d31d0afbd45e830e3cf565a7b3ca7bf0d8 (fixed)

Vendor states this is fixed in ea6145370be8016755c43aca799815fc4b8c88b1 (fixed)

Vendor states this is fixed in 2.6.12 (unaffected)

Vendor states this is fixed in 4.14.303 (unaffected)

Vendor states this is fixed in 4.19.270 (unaffected)