{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26588", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "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] [<9000000003137f7c>] build_body+0xd8/0x4988\n [ 130.644785] [<900000000313ca94>] bpf_int_jit_compile+0x228/0x4ec\n [ 130.644891] [<90000000032acfb0>] bpf_prog_select_runtime+0x158/0x1b0\n [ 130.645003] [<90000000032b3504>] bpf_prog_load+0x760/0xb44\n [ 130.645089] [<90000000032b6744>] __sys_bpf+0xbb8/0x2588\n [ 130.645175] [<90000000032b8388>] sys_bpf+0x20/0x2c\n [ 130.645259] [<9000000003f6ab38>] do_syscall+0x7c/0x94\n [ 130.645369] [<9000000003121c5c>] handle_syscall+0xbc/0x158\n [ 130.645507]\n [ 130.645539] Code: 380839f6 380831f9 28412bae <24000ca6> 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->insnsi)fff\n---truncated---" } ] }, "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": "bbfddb904df6", "version_value": "4631c2dd69d9" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "6.1", "status": "affected" }, { "version": "0", "lessThan": "6.1", "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" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/4631c2dd69d928bca396f9f58baeddf85e14ced5", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4631c2dd69d928bca396f9f58baeddf85e14ced5" }, { "url": "https://git.kernel.org/stable/c/9aeb09f4d85a87bac46c010d75a2ea299d462f28", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/9aeb09f4d85a87bac46c010d75a2ea299d462f28" }, { "url": "https://git.kernel.org/stable/c/7924ade13a49c0067da6ea13e398102979c0654a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/7924ade13a49c0067da6ea13e398102979c0654a" }, { "url": "https://git.kernel.org/stable/c/36a87385e31c9343af9a4756598e704741250a67", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/36a87385e31c9343af9a4756598e704741250a67" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }