mirror of
https://github.com/CVEProject/cvelist.git
synced 2025-07-29 05:56:59 +00:00
135 lines
8.5 KiB
JSON
135 lines
8.5 KiB
JSON
{
|
|
"data_version": "4.0",
|
|
"data_type": "CVE",
|
|
"data_format": "MITRE",
|
|
"CVE_data_meta": {
|
|
"ID": "CVE-2024-26589",
|
|
"ASSIGNER": "cve@kernel.org",
|
|
"STATE": "PUBLIC"
|
|
},
|
|
"description": {
|
|
"description_data": [
|
|
{
|
|
"lang": "eng",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject variable offset alu on PTR_TO_FLOW_KEYS\n\nFor PTR_TO_FLOW_KEYS, check_flow_keys_access() only uses fixed off\nfor validation. However, variable offset ptr alu is not prohibited\nfor this ptr kind. So the variable offset is not checked.\n\nThe following prog is accepted:\n\n func#0 @0\n 0: R1=ctx() R10=fp0\n 0: (bf) r6 = r1 ; R1=ctx() R6_w=ctx()\n 1: (79) r7 = *(u64 *)(r6 +144) ; R6_w=ctx() R7_w=flow_keys()\n 2: (b7) r8 = 1024 ; R8_w=1024\n 3: (37) r8 /= 1 ; R8_w=scalar()\n 4: (57) r8 &= 1024 ; R8_w=scalar(smin=smin32=0,\n smax=umax=smax32=umax32=1024,var_off=(0x0; 0x400))\n 5: (0f) r7 += r8\n mark_precise: frame0: last_idx 5 first_idx 0 subseq_idx -1\n mark_precise: frame0: regs=r8 stack= before 4: (57) r8 &= 1024\n mark_precise: frame0: regs=r8 stack= before 3: (37) r8 /= 1\n mark_precise: frame0: regs=r8 stack= before 2: (b7) r8 = 1024\n 6: R7_w=flow_keys(smin=smin32=0,smax=umax=smax32=umax32=1024,var_off\n =(0x0; 0x400)) R8_w=scalar(smin=smin32=0,smax=umax=smax32=umax32=1024,\n var_off=(0x0; 0x400))\n 6: (79) r0 = *(u64 *)(r7 +0) ; R0_w=scalar()\n 7: (95) exit\n\nThis prog loads flow_keys to r7, and adds the variable offset r8\nto r7, and finally causes out-of-bounds access:\n\n BUG: unable to handle page fault for address: ffffc90014c80038\n [...]\n Call Trace:\n <TASK>\n bpf_dispatcher_nop_func include/linux/bpf.h:1231 [inline]\n __bpf_prog_run include/linux/filter.h:651 [inline]\n bpf_prog_run include/linux/filter.h:658 [inline]\n bpf_prog_run_pin_on_cpu include/linux/filter.h:675 [inline]\n bpf_flow_dissect+0x15f/0x350 net/core/flow_dissector.c:991\n bpf_prog_test_run_flow_dissector+0x39d/0x620 net/bpf/test_run.c:1359\n bpf_prog_test_run kernel/bpf/syscall.c:4107 [inline]\n __sys_bpf+0xf8f/0x4560 kernel/bpf/syscall.c:5475\n __do_sys_bpf kernel/bpf/syscall.c:5561 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5559 [inline]\n __x64_sys_bpf+0x73/0xb0 kernel/bpf/syscall.c:5559\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nFix this by rejecting ptr alu with variable offset on flow_keys.\nApplying the patch rejects the program with \"R7 pointer arithmetic\non flow_keys prohibited\"."
|
|
}
|
|
]
|
|
},
|
|
"problemtype": {
|
|
"problemtype_data": [
|
|
{
|
|
"description": [
|
|
{
|
|
"lang": "eng",
|
|
"value": "n/a"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
"affects": {
|
|
"vendor": {
|
|
"vendor_data": [
|
|
{
|
|
"vendor_name": "Linux",
|
|
"product": {
|
|
"product_data": [
|
|
{
|
|
"product_name": "Linux",
|
|
"version": {
|
|
"version_data": [
|
|
{
|
|
"version_affected": "<",
|
|
"version_name": "d58e468b1112",
|
|
"version_value": "29ffa63f21bc"
|
|
},
|
|
{
|
|
"version_value": "not down converted",
|
|
"x_cve_json_5_version_data": {
|
|
"versions": [
|
|
{
|
|
"version": "4.20",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "4.20",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.148",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.75",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.14",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.7.2",
|
|
"lessThanOrEqual": "6.7.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.8",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
],
|
|
"defaultStatus": "affected"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
},
|
|
"references": {
|
|
"reference_data": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/29ffa63f21bcdcef3e36b03cccf9d0cd031f6ab0",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/29ffa63f21bcdcef3e36b03cccf9d0cd031f6ab0"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4108b86e324da42f7ed425bd71632fd844300dc8",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/4108b86e324da42f7ed425bd71632fd844300dc8"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e8d3872b617c21100c5ee4f64e513997a68c2e3d",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/e8d3872b617c21100c5ee4f64e513997a68c2e3d"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/1b500d5d6cecf98dd6ca88bc9e7ae1783c83e6d3",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/1b500d5d6cecf98dd6ca88bc9e7ae1783c83e6d3"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/22c7fa171a02d310e3a3f6ed46a698ca8a0060ed",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/22c7fa171a02d310e3a3f6ed46a698ca8a0060ed"
|
|
}
|
|
]
|
|
},
|
|
"generator": {
|
|
"engine": "bippy-9e1c9544281a"
|
|
}
|
|
} |