In the Linux kernel, the following vulnerability has been resolved:
net: wwan: t7xx: Split 64bit accesses to fix alignment issues
Some of the registers are aligned on a 32bit boundary, causing alignment faults on 64bit platforms.
Unable to handle kernel paging request at virtual address ffffffc084a1d004 Mem abort info: ESR = 0x0000000096000061 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x21: alignment fault Data abort info: ISV = 0, ISS = 0x00000061, ISS2 = 0x00000000 CM = 0, WnR = 1, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000046ad6000 [ffffffc084a1d004] pgd=100000013ffff003, p4d=100000013ffff003, pud=100000013ffff003, pmd=0068000020a00711 Internal error: Oops: 0000000096000061 [#1] SMP Modules linked in: mtk_t7xx(+) qcserial pppoe ppp_async option nft_fib_inet nf_flow_table_inet mt7921u(O) mt7921s(O) mt7921e(O) mt7921_common(O) iwlmvm(O) iwldvm(O) usb_wwan rndis_host qmi_wwan pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_ct nft_chain_nat nf_tables nf_nat nf_flow_table nf_conntrack mt7996e(O) mt792x_usb(O) mt792x_lib(O) mt7915e(O) mt76_usb(O) mt76_sdio(O) mt76_connac_lib(O) mt76(O) mac80211(O) iwlwifi(O) huawei_cdc_ncm cfg80211(O) cdc_ncm cdc_ether wwan usbserial usbnet slhc sfp rtc_pcf8563 nfnetlink nf_reject_ipv6 nf_reject_ipv4 nf_log_syslog nf_defrag_ipv6 nf_defrag_ipv4 mt6577_auxadc mdio_i2c libcrc32c compat(O) cdc_wdm cdc_acm at24 crypto_safexcel pwm_fan i2c_gpio i2c_smbus industrialio i2c_algo_bit i2c_mux_reg i2c_mux_pca954x i2c_mux_pca9541 i2c_mux_gpio i2c_mux dummy oid_registry tun sha512_arm64 sha1_ce sha1_generic seqiv md5 geniv des_generic libdes cbc authencesn authenc leds_gpio xhci_plat_hcd xhci_pci xhci_mtk_hcd xhci_hcd nvme nvme_core gpio_button_hotplug(O) dm_mirror dm_region_hash dm_log dm_crypt dm_mod dax usbcore usb_common ptp aquantia pps_core mii tpm encrypted_keys trusted CPU: 3 PID: 5266 Comm: kworker/u9:1 Tainted: G O 6.6.22 #0 Hardware name: Bananapi BPI-R4 (DT) Workqueue: md_hk_wq t7xx_fsm_uninit [mtk_t7xx] pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : t7xx_cldma_hw_set_start_addr+0x1c/0x3c [mtk_t7xx] lr : t7xx_cldma_start+0xac/0x13c [mtk_t7xx] sp : ffffffc085d63d30 x29: ffffffc085d63d30 x28: 0000000000000000 x27: 0000000000000000 x26: 0000000000000000 x25: ffffff80c804f2c0 x24: ffffff80ca196c05 x23: 0000000000000000 x22: ffffff80c814b9b8 x21: ffffff80c814b128 x20: 0000000000000001 x19: ffffff80c814b080 x18: 0000000000000014 x17: 0000000055c9806b x16: 000000007c5296d0 x15: 000000000f6bca68 x14: 00000000dbdbdce4 x13: 000000001aeaf72a x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffffff80ca1ef6b4 x7 : ffffff80c814b818 x6 : 0000000000000018 x5 : 0000000000000870 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 000000010a947000 x1 : ffffffc084a1d004 x0 : ffffffc084a1d004 Call trace: t7xx_cldma_hw_set_start_addr+0x1c/0x3c [mtk_t7xx] t7xx_fsm_uninit+0x578/0x5ec [mtk_t7xx] process_one_work+0x154/0x2a0 worker_thread+0x2ac/0x488 kthread+0xe0/0xec ret_from_fork+0x10/0x20 Code: f9400800 91001000 8b214001 d50332bf (f9000022) ---[ end trace 0000000000000000 ]---
The inclusion of io-64-nonatomic-lo-hi.h indicates that all 64bit accesses can be replaced by pairs of nonatomic 32bit access. Fix alignment by forcing all accesses to be 32bit on 64bit platforms.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 19, 2024 |
| Suse | — | Upgrade kernel-rt_debugUpgrade dtb-alteraUpgrade dtb-socionextUpgrade kernel-rt_debug-vdsoUpgrade gfs2-kmp-defaultUpgrade kernel-sourceUpgrade dtb-broadcomUpgrade kselftests-kmp-azureUpgrade dlm-kmp-rtUpgrade kernel-64kb-extraUpgrade cluster-md-kmp-64kbUpgrade dtb-nvidiaUpgrade kernel-obs-buildUpgrade ocfs2-kmp-64kbUpgrade cluster-md-kmp-defaultUpgrade kernel-debug-vdsoUpgrade kernel-azure-livepatch-develUpgrade kernel-azure-vdsoUpgrade kernel-debug-livepatch-develUpgrade kernel-macrosUpgrade kernel-source-rtUpgrade kernel-rt_debug-develUpgrade kernel-rt-optionalUpgrade dtb-qcomUpgrade dlm-kmp-64kbUpgrade dtb-amlogicUpgrade kernel-syms-rtUpgrade kernel-rtUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-syms-azureUpgrade dtb-rockchipUpgrade kernel-default-base-rebuildUpgrade dtb-marvellUpgrade kernel-rt-vdsoUpgrade kernel-devel-azureUpgrade dtb-exynosUpgrade kernel-azure-develUpgrade dtb-sprdUpgrade kernel-defaultUpgrade kernel-docs-htmlUpgrade kernel-azureUpgrade kernel-source-vanillaUpgrade kernel-rt-extraUpgrade reiserfs-kmp-64kbUpgrade kernel-azure-optionalUpgrade kernel-kvmsmallUpgrade kernel-default-livepatchUpgrade kselftests-kmp-64kbUpgrade dtb-caviumUpgrade dtb-appleUpgrade kernel-obs-qaUpgrade kernel-default-extraUpgrade kernel-debugUpgrade kernel-azure-extraUpgrade kernel-64kb-livepatch-develUpgrade ocfs2-kmp-azureUpgrade kernel-default-develUpgrade dlm-kmp-azureUpgrade gfs2-kmp-64kbUpgrade reiserfs-kmp-azureUpgrade kernel-zfcpdumpUpgrade kselftests-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-debug-develUpgrade dtb-renesasUpgrade dtb-freescaleUpgrade dtb-lgUpgrade dtb-apmUpgrade reiserfs-kmp-defaultUpgrade dlm-kmp-defaultUpgrade kernel-kvmsmall-livepatch-develUpgrade kselftests-kmp-defaultUpgrade kernel-64kbUpgrade kernel-default-livepatch-develUpgrade ocfs2-kmp-defaultUpgrade kernel-default-optionalUpgrade dtb-armUpgrade dtb-amdUpgrade ocfs2-kmp-rtUpgrade kernel-devel-rtUpgrade dtb-mediatekUpgrade dtb-amazonUpgrade cluster-md-kmp-rtUpgrade kernel-source-azureUpgrade kernel-kvmsmall-develUpgrade kernel-docsUpgrade kernel-64kb-develUpgrade dtb-allwinnerUpgrade kernel-rt-develUpgrade dtb-hisiliconUpgrade kernel-symsUpgrade kernel-develUpgrade kernel-64kb-optionalUpgrade reiserfs-kmp-rtUpgrade kernel-default-vdsoUpgrade gfs2-kmp-rtUpgrade gfs2-kmp-azureUpgrade cluster-md-kmp-azureUpgrade dtb-xilinxUpgrade kernel-default-base | Jun 24, 2024 | May 19, 2024 |
| Ubuntu | — | Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-38-lowlatencyUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-virtualUpgrade linux-image-gcpUpgrade linux-image-6.8.0-38-lowlatency-64kUpgrade linux-image-6.8.0-1010-azureUpgrade linux-image-oracle-64kUpgrade linux-image-azure-fdeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1009-nvidiaUpgrade linux-image-kvmUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1008-oracleUpgrade linux-image-6.8.0-1008-ibmUpgrade linux-image-6.8.0-38-genericUpgrade linux-image-awsUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1007-raspiUpgrade linux-image-6.8.0-1008-oracle-64kUpgrade linux-image-ibmUpgrade linux-image-6.8.0-38-generic-64kUpgrade linux-image-6.8.0-1010-azure-fdeUpgrade linux-image-genericUpgrade linux-image-6.8.0-1009-nvidia-64kUpgrade linux-image-generic-64kUpgrade linux-image-raspiUpgrade linux-image-oem-24.04Upgrade linux-image-nvidiaUpgrade linux-image-intelUpgrade linux-image-6.8.0-1010-gcpUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1008-oemUpgrade linux-image-lowlatencyUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gkeUpgrade linux-image-generic-lpaeUpgrade linux-image-azureUpgrade linux-image-6.8.0-1007-intelUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1011-awsUpgrade linux-image-6.8.0-1006-gke | Jul 12, 2024 | May 19, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 14, 2025 | May 19, 2024 |
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