ghsa-x6p5-7c22-qrq6
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
LoongArch: BPF: Prevent out-of-bounds memory access
The test_tag test triggers an unhandled page fault:
# ./test_tag [ 130.640218] CPU 0 Unable to handle kernel paging request at virtual address ffff80001b898004, era == 9000000003137f7c, ra == 9000000003139e70 [ 130.640501] Oops[#3]: [ 130.640553] CPU: 0 PID: 1326 Comm: test_tag Tainted: G D O 6.7.0-rc4-loong-devel-gb62ab1a397cf #47 61985c1d94084daa2432f771daa45b56b10d8d2a [ 130.640764] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022 [ 130.640874] pc 9000000003137f7c ra 9000000003139e70 tp 9000000104cb4000 sp 9000000104cb7a40 [ 130.641001] a0 ffff80001b894000 a1 ffff80001b897ff8 a2 000000006ba210be a3 0000000000000000 [ 130.641128] a4 000000006ba210be a5 00000000000000f1 a6 00000000000000b3 a7 0000000000000000 [ 130.641256] t0 0000000000000000 t1 00000000000007f6 t2 0000000000000000 t3 9000000004091b70 [ 130.641387] t4 000000006ba210be t5 0000000000000004 t6 fffffffffffffff0 t7 90000000040913e0 [ 130.641512] t8 0000000000000005 u0 0000000000000dc0 s9 0000000000000009 s0 9000000104cb7ae0 [ 130.641641] s1 00000000000007f6 s2 0000000000000009 s3 0000000000000095 s4 0000000000000000 [ 130.641771] s5 ffff80001b894000 s6 ffff80001b897fb0 s7 9000000004090c50 s8 0000000000000000 [ 130.641900] ra: 9000000003139e70 build_body+0x1fcc/0x4988 [ 130.642007] ERA: 9000000003137f7c build_body+0xd8/0x4988 [ 130.642112] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 130.642261] PRMD: 00000004 (PPLV0 +PIE -PWE) [ 130.642353] EUEN: 00000003 (+FPE +SXE -ASXE -BTE) [ 130.642458] ECFG: 00071c1c (LIE=2-4,10-12 VS=7) [ 130.642554] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0) [ 130.642658] BADV: ffff80001b898004 [ 130.642719] PRID: 0014c010 (Loongson-64bit, Loongson-3A5000) [ 130.642815] Modules linked in: [last unloaded: bpf_testmod(O)] [ 130.642924] Process test_tag (pid: 1326, threadinfo=00000000f7f4015f, task=000000006499f9fd) [ 130.643062] Stack : 0000000000000000 9000000003380724 0000000000000000 0000000104cb7be8 [ 130.643213] 0000000000000000 25af8d9b6e600558 9000000106250ea0 9000000104cb7ae0 [ 130.643378] 0000000000000000 0000000000000000 9000000104cb7be8 90000000049f6000 [ 130.643538] 0000000000000090 9000000106250ea0 ffff80001b894000 ffff80001b894000 [ 130.643685] 00007ffffb917790 900000000313ca94 0000000000000000 0000000000000000 [ 130.643831] ffff80001b894000 0000000000000ff7 0000000000000000 9000000100468000 [ 130.643983] 0000000000000000 0000000000000000 0000000000000040 25af8d9b6e600558 [ 130.644131] 0000000000000bb7 ffff80001b894048 0000000000000000 0000000000000000 [ 130.644276] 9000000104cb7be8 90000000049f6000 0000000000000090 9000000104cb7bdc [ 130.644423] ffff80001b894000 0000000000000000 00007ffffb917790 90000000032acfb0 [ 130.644572] ... [ 130.644629] Call Trace: [ 130.644641] [<9000000003137f7c>] build_body+0xd8/0x4988 [ 130.644785] [<900000000313ca94>] bpf_int_jit_compile+0x228/0x4ec [ 130.644891] [<90000000032acfb0>] bpf_prog_select_runtime+0x158/0x1b0 [ 130.645003] [<90000000032b3504>] bpf_prog_load+0x760/0xb44 [ 130.645089] [<90000000032b6744>] __sys_bpf+0xbb8/0x2588 [ 130.645175] [<90000000032b8388>] sys_bpf+0x20/0x2c [ 130.645259] [<9000000003f6ab38>] do_syscall+0x7c/0x94 [ 130.645369] [<9000000003121c5c>] handle_syscall+0xbc/0x158 [ 130.645507] [ 130.645539] Code: 380839f6 380831f9 28412bae <24000ca6> 004081ad 0014cb50 004083e8 02bff34c 58008e91 [ 130.645729] [ 130.646418] ---[ end trace 0000000000000000 ]---
On my machine, which has CONFIG_PAGE_SIZE_16KB=y, the test failed at loading a BPF prog with 2039 instructions:
prog = (struct bpf_prog )ffff80001b894000 insn = (struct bpf_insn )(prog->insnsi)fff ---truncated---
{
"affected": [],
"aliases": [
"CVE-2024-26588"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-22T17:15:08Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: BPF: Prevent out-of-bounds memory access\n\nThe test_tag test triggers an unhandled page fault:\n\n # ./test_tag\n [ 130.640218] CPU 0 Unable to handle kernel paging request at virtual address ffff80001b898004, era == 9000000003137f7c, ra == 9000000003139e70\n [ 130.640501] Oops[#3]:\n [ 130.640553] CPU: 0 PID: 1326 Comm: test_tag Tainted: G D O 6.7.0-rc4-loong-devel-gb62ab1a397cf #47 61985c1d94084daa2432f771daa45b56b10d8d2a\n [ 130.640764] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022\n [ 130.640874] pc 9000000003137f7c ra 9000000003139e70 tp 9000000104cb4000 sp 9000000104cb7a40\n [ 130.641001] a0 ffff80001b894000 a1 ffff80001b897ff8 a2 000000006ba210be a3 0000000000000000\n [ 130.641128] a4 000000006ba210be a5 00000000000000f1 a6 00000000000000b3 a7 0000000000000000\n [ 130.641256] t0 0000000000000000 t1 00000000000007f6 t2 0000000000000000 t3 9000000004091b70\n [ 130.641387] t4 000000006ba210be t5 0000000000000004 t6 fffffffffffffff0 t7 90000000040913e0\n [ 130.641512] t8 0000000000000005 u0 0000000000000dc0 s9 0000000000000009 s0 9000000104cb7ae0\n [ 130.641641] s1 00000000000007f6 s2 0000000000000009 s3 0000000000000095 s4 0000000000000000\n [ 130.641771] s5 ffff80001b894000 s6 ffff80001b897fb0 s7 9000000004090c50 s8 0000000000000000\n [ 130.641900] ra: 9000000003139e70 build_body+0x1fcc/0x4988\n [ 130.642007] ERA: 9000000003137f7c build_body+0xd8/0x4988\n [ 130.642112] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)\n [ 130.642261] PRMD: 00000004 (PPLV0 +PIE -PWE)\n [ 130.642353] EUEN: 00000003 (+FPE +SXE -ASXE -BTE)\n [ 130.642458] ECFG: 00071c1c (LIE=2-4,10-12 VS=7)\n [ 130.642554] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)\n [ 130.642658] BADV: ffff80001b898004\n [ 130.642719] PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)\n [ 130.642815] Modules linked in: [last unloaded: bpf_testmod(O)]\n [ 130.642924] Process test_tag (pid: 1326, threadinfo=00000000f7f4015f, task=000000006499f9fd)\n [ 130.643062] Stack : 0000000000000000 9000000003380724 0000000000000000 0000000104cb7be8\n [ 130.643213] 0000000000000000 25af8d9b6e600558 9000000106250ea0 9000000104cb7ae0\n [ 130.643378] 0000000000000000 0000000000000000 9000000104cb7be8 90000000049f6000\n [ 130.643538] 0000000000000090 9000000106250ea0 ffff80001b894000 ffff80001b894000\n [ 130.643685] 00007ffffb917790 900000000313ca94 0000000000000000 0000000000000000\n [ 130.643831] ffff80001b894000 0000000000000ff7 0000000000000000 9000000100468000\n [ 130.643983] 0000000000000000 0000000000000000 0000000000000040 25af8d9b6e600558\n [ 130.644131] 0000000000000bb7 ffff80001b894048 0000000000000000 0000000000000000\n [ 130.644276] 9000000104cb7be8 90000000049f6000 0000000000000090 9000000104cb7bdc\n [ 130.644423] ffff80001b894000 0000000000000000 00007ffffb917790 90000000032acfb0\n [ 130.644572] ...\n [ 130.644629] Call Trace:\n [ 130.644641] [\u003c9000000003137f7c\u003e] build_body+0xd8/0x4988\n [ 130.644785] [\u003c900000000313ca94\u003e] bpf_int_jit_compile+0x228/0x4ec\n [ 130.644891] [\u003c90000000032acfb0\u003e] bpf_prog_select_runtime+0x158/0x1b0\n [ 130.645003] [\u003c90000000032b3504\u003e] bpf_prog_load+0x760/0xb44\n [ 130.645089] [\u003c90000000032b6744\u003e] __sys_bpf+0xbb8/0x2588\n [ 130.645175] [\u003c90000000032b8388\u003e] sys_bpf+0x20/0x2c\n [ 130.645259] [\u003c9000000003f6ab38\u003e] do_syscall+0x7c/0x94\n [ 130.645369] [\u003c9000000003121c5c\u003e] handle_syscall+0xbc/0x158\n [ 130.645507]\n [ 130.645539] Code: 380839f6 380831f9 28412bae \u003c24000ca6\u003e 004081ad 0014cb50 004083e8 02bff34c 58008e91\n [ 130.645729]\n [ 130.646418] ---[ end trace 0000000000000000 ]---\n\nOn my machine, which has CONFIG_PAGE_SIZE_16KB=y, the test failed at\nloading a BPF prog with 2039 instructions:\n\n prog = (struct bpf_prog *)ffff80001b894000\n insn = (struct bpf_insn *)(prog-\u003einsnsi)fff\n---truncated---",
"id": "GHSA-x6p5-7c22-qrq6",
"modified": "2024-03-18T18:32:18Z",
"published": "2024-02-22T18:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26588"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/36a87385e31c9343af9a4756598e704741250a67"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4631c2dd69d928bca396f9f58baeddf85e14ced5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7924ade13a49c0067da6ea13e398102979c0654a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9aeb09f4d85a87bac46c010d75a2ea299d462f28"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}