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LinuxCVE-2024-26591

HistoryFeb 22, 2024 - 5:15 p.m.

CVE-2024-26591

2024-02-2217:15:09

CWE-476

Linux

web.nvd.nist.gov

313

cve-2024-26591

linux kernel

bpf

vulnerability

fix

security update

nvd

kernel null pointer dereference

address 0000000000000058

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

Confidence

Low

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix re-attachment branch in bpf_tracing_prog_attach

The following case can cause a crash due to missing attach_btf:

load rawtp program
load fentry program with rawtp as target_fd
create tracing link for fentry program with target_fd = 0
repeat 3

In the end we have:

prog->aux->dst_trampoline == NULL
tgt_prog == NULL (because we did not provide target_fd to link_create)
prog->aux->attach_btf == NULL (the program was loaded with attach_prog_fd=X)
the program was loaded for tgt_prog but we have no way to find out which one

BUG: kernel NULL pointer dereference, address: 0000000000000058
Call Trace:
<TASK>
? __die+0x20/0x70
? page_fault_oops+0x15b/0x430
? fixup_exception+0x22/0x330
? exc_page_fault+0x6f/0x170
? asm_exc_page_fault+0x22/0x30
? bpf_tracing_prog_attach+0x279/0x560
? btf_obj_id+0x5/0x10
bpf_tracing_prog_attach+0x439/0x560
__sys_bpf+0x1cf4/0x2de0
__x64_sys_bpf+0x1c/0x30
do_syscall_64+0x41/0xf0
entry_SYSCALL_64_after_hwframe+0x6e/0x76

Return -EINVAL in this situation.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange<5.15.148

linuxlinux_kernelRange5.16.0–6.1.75

linuxlinux_kernelRange6.2.0–6.6.14

linuxlinux_kernelRange6.7.0–6.7.2

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/bpf/syscall.c"
    ],
    "versions": [
      {
        "version": "f3a95075549e",
        "lessThan": "a7b98aa10f89",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f3a95075549e",
        "lessThan": "6cc9c0af0aa0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f3a95075549e",
        "lessThan": "8c8bcd45e9b1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f3a95075549e",
        "lessThan": "50ae82f080cf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f3a95075549e",
        "lessThan": "715d82ba636c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/bpf/syscall.c"
    ],
    "versions": [
      {
        "version": "5.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.13",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.148",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.75",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.14",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.2",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]