{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54241", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.509Z", "datePublished": "2025-12-30T12:11:29.726Z", "dateUpdated": "2026-05-11T19:58:10.970Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:58:10.970Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: KVM: Fix NULL pointer dereference\n\nAfter commit 45c7e8af4a5e3f0bea4ac209 (\"MIPS: Remove KVM_TE support\") we\nget a NULL pointer dereference when creating a KVM guest:\n\n[ 146.243409] Starting KVM with MIPS VZ extensions\n[ 149.849151] CPU 3 Unable to handle kernel paging request at virtual address 0000000000000300, epc == ffffffffc06356ec, ra == ffffffffc063568c\n[ 149.849177] Oops[#1]:\n[ 149.849182] CPU: 3 PID: 2265 Comm: qemu-system-mip Not tainted 6.4.0-rc3+ #1671\n[ 149.849188] Hardware name: THTF CX TL630 Series/THTF-LS3A4000-7A1000-ML4A, BIOS KL4.1F.TF.D.166.201225.R 12/25/2020\n[ 149.849192] $ 0 : 0000000000000000 000000007400cce0 0000000000400004 ffffffff8119c740\n[ 149.849209] $ 4 : 000000007400cce1 000000007400cce1 0000000000000000 0000000000000000\n[ 149.849221] $ 8 : 000000240058bb36 ffffffff81421ac0 0000000000000000 0000000000400dc0\n[ 149.849233] $12 : 9800000102a07cc8 ffffffff80e40e38 0000000000000001 0000000000400dc0\n[ 149.849245] $16 : 0000000000000000 9800000106cd0000 9800000106cd0000 9800000100cce000\n[ 149.849257] $20 : ffffffffc0632b28 ffffffffc05b31b0 9800000100ccca00 0000000000400000\n[ 149.849269] $24 : 9800000106cd09ce ffffffff802f69d0\n[ 149.849281] $28 : 9800000102a04000 9800000102a07cd0 98000001106a8000 ffffffffc063568c\n[ 149.849293] Hi : 00000335b2111e66\n[ 149.849295] Lo : 6668d90061ae0ae9\n[ 149.849298] epc : ffffffffc06356ec kvm_vz_vcpu_setup+0xc4/0x328 [kvm]\n[ 149.849324] ra : ffffffffc063568c kvm_vz_vcpu_setup+0x64/0x328 [kvm]\n[ 149.849336] Status: 7400cce3 KX SX UX KERNEL EXL IE\n[ 149.849351] Cause : 1000000c (ExcCode 03)\n[ 149.849354] BadVA : 0000000000000300\n[ 149.849357] PrId : 0014c004 (ICT Loongson-3)\n[ 149.849360] Modules linked in: kvm nfnetlink_queue nfnetlink_log nfnetlink fuse sha256_generic libsha256 cfg80211 rfkill binfmt_misc vfat fat snd_hda_codec_hdmi input_leds led_class snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_pcm snd_timer snd serio_raw xhci_pci radeon drm_suballoc_helper drm_display_helper xhci_hcd ip_tables x_tables\n[ 149.849432] Process qemu-system-mip (pid: 2265, threadinfo=00000000ae2982d2, task=0000000038e09ad4, tls=000000ffeba16030)\n[ 149.849439] Stack : 9800000000000003 9800000100ccca00 9800000100ccc000 ffffffffc062cef4\n[ 149.849453] 9800000102a07d18 c89b63a7ab338e00 0000000000000000 ffffffff811a0000\n[ 149.849465] 0000000000000000 9800000106cd0000 ffffffff80e59938 98000001106a8920\n[ 149.849476] ffffffff80e57f30 ffffffffc062854c ffffffff811a0000 9800000102bf4240\n[ 149.849488] ffffffffc05b0000 ffffffff80e3a798 000000ff78000000 000000ff78000010\n[ 149.849500] 0000000000000255 98000001021f7de0 98000001023f0078 ffffffff81434000\n[ 149.849511] 0000000000000000 0000000000000000 9800000102ae0000 980000025e92ae28\n[ 149.849523] 0000000000000000 c89b63a7ab338e00 0000000000000001 ffffffff8119dce0\n[ 149.849535] 000000ff78000010 ffffffff804f3d3c 9800000102a07eb0 0000000000000255\n[ 149.849546] 0000000000000000 ffffffff8049460c 000000ff78000010 0000000000000255\n[ 149.849558] ...\n[ 149.849565] Call Trace:\n[ 149.849567] [] kvm_vz_vcpu_setup+0xc4/0x328 [kvm]\n[ 149.849586] [] kvm_arch_vcpu_create+0x184/0x228 [kvm]\n[ 149.849605] [] kvm_vm_ioctl+0x64c/0xf28 [kvm]\n[ 149.849623] [] sys_ioctl+0xc8/0x118\n[ 149.849631] [] syscall_common+0x34/0x58\n\nThe root cause is the deletion of kvm_mips_commpage_init() leaves vcpu\n->arch.cop0 NULL. So fix it by making cop0 from a pointer to an embedded\nobject." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/mips/include/asm/kvm_host.h", "arch/mips/kvm/emulate.c", "arch/mips/kvm/mips.c", "arch/mips/kvm/trace.h", "arch/mips/kvm/vz.c" ], "versions": [ { "version": "45c7e8af4a5e3f0bea4ac209eea34118dd57ac64", "lessThan": "cd517f9a9d07d41f4f3593b1da3982261e09d162", "status": "affected", "versionType": "git" }, { "version": "45c7e8af4a5e3f0bea4ac209eea34118dd57ac64", "lessThan": "bd9cf2a5f9e1b2229ad22f21de6f6ad1a9c8858e", "status": "affected", "versionType": "git" }, { "version": "45c7e8af4a5e3f0bea4ac209eea34118dd57ac64", "lessThan": "6b9fb255d53759e3ea9b30067cb55091df1caf06", "status": "affected", "versionType": "git" }, { "version": "45c7e8af4a5e3f0bea4ac209eea34118dd57ac64", "lessThan": "e4de2057698636c0ee709e545d19b169d2069fa3", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/mips/include/asm/kvm_host.h", "arch/mips/kvm/emulate.c", "arch/mips/kvm/mips.c", "arch/mips/kvm/trace.h", "arch/mips/kvm/vz.c" ], "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.40", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.5", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.4.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/cd517f9a9d07d41f4f3593b1da3982261e09d162" }, { "url": "https://git.kernel.org/stable/c/bd9cf2a5f9e1b2229ad22f21de6f6ad1a9c8858e" }, { "url": "https://git.kernel.org/stable/c/6b9fb255d53759e3ea9b30067cb55091df1caf06" }, { "url": "https://git.kernel.org/stable/c/e4de2057698636c0ee709e545d19b169d2069fa3" } ], "title": "MIPS: KVM: Fix NULL pointer dereference", "x_generator": { "engine": "bippy-1.2.0" } } } }