CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48755 – powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06
https://notcve.org/view.php?id=CVE-2022-48755
In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Johan reported the below crash with test_bpf on ppc64 e5500: test_bpf: #296 ALU_END_FROM_LE 64: 0x0123456789abcdef -> 0x67452301 jited:1 Oops: Exception in kernel mode, sig: 4 [#1] BE PAGE_SIZE=4K SMP NR_CPUS=24 QEMU e500 Modules linked in: test_bpf(+) CPU: 0 PID: 76 Comm: insmod Not tainted 5.14.0-03771-g98c2059e008a-dirty #1 NIP: 8000000000061c3c LR: 80000000006dea64 CTR: 8000000000061c18 REGS: c0000000032d3420 TRAP: 0700 Not tainted (5.14.0-03771-g98c2059e008a-dirty) MSR: 0000000080089000 <EE,ME> CR: 88002822 XER: 20000000 IRQMASK: 0 <...> NIP [8000000000061c3c] 0x8000000000061c3c LR [80000000006dea64] .__run_one+0x104/0x17c [test_bpf] Call Trace: .__run_one+0x60/0x17c [test_bpf] (unreliable) .test_bpf_init+0x6a8/0xdc8 [test_bpf] .do_one_initcall+0x6c/0x28c .do_init_module+0x68/0x28c .load_module+0x2460/0x2abc .__do_sys_init_module+0x120/0x18c .system_call_exception+0x110/0x1b8 system_call_common+0xf0/0x210 --- interrupt: c00 at 0x101d0acc <... • https://git.kernel.org/stable/c/156d0e290e969caba25f1851c52417c14d141b24 https://git.kernel.org/stable/c/129c71829d7f46423d95c19e8d87ce956d4c6e1c https://git.kernel.org/stable/c/3bfbc00587dc883eaed383558ae512a351c2cd09 https://git.kernel.org/stable/c/aaccfeeee1630b155e8ff0d6c449d3de1ef86e73 https://git.kernel.org/stable/c/3f5f766d5f7f95a69a630da3544a1a0cee1cdddf •
CVSS: 8.4EPSS: 0%CPEs: 6EXPL: 0CVE-2022-48754 – phylib: fix potential use-after-free
https://notcve.org/view.php?id=CVE-2022-48754
In the Linux kernel, the following vulnerability has been resolved: phylib: fix potential use-after-free Commit bafbdd527d56 ("phylib: Add device reset GPIO support") added call to phy_device_reset(phydev) after the put_device() call in phy_detach(). The comment before the put_device() call says that the phydev might go away with put_device(). Fix potential use-after-free by calling phy_device_reset() before put_device(). En el kernel de Linux, se resolvió la siguiente vulnerabilidad: phylib: corrige el posible use-after-free. Commit bafbdd527d56 ("phylib: agregue soporte GPIO para restablecer el dispositivo") se agregó una llamada a phy_device_reset(phydev) después de la llamada put_device() en phy_detach( ). El comentario antes de la llamada put_device() dice que phydev podría desaparecer con put_device(). Solucione el posible use-after-free llamando a phy_device_reset() antes de put_device(). • https://git.kernel.org/stable/c/bafbdd527d569c8200521f2f7579f65a044271be https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205 https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17 https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2 https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289 https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c https://access.redhat.com/security/cve/CVE-2022-48754 • CWE-416: Use After Free •
CVSS: 5.3EPSS: 0%CPEs: 2EXPL: 0CVE-2022-48753 – block: fix memory leak in disk_register_independent_access_ranges
https://notcve.org/view.php?id=CVE-2022-48753
In the Linux kernel, the following vulnerability has been resolved: block: fix memory leak in disk_register_independent_access_ranges kobject_init_and_add() takes reference even when it fails. According to the doc of kobject_init_and_add() If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Fix this issue by adding kobject_put(). Callback function blk_ia_ranges_sysfs_release() in kobject_put() can handle the pointer "iars" properly. • https://git.kernel.org/stable/c/a2247f19ee1c5ad75ef095cdfb909a3244b88aa8 https://git.kernel.org/stable/c/fe4214a07e0b53d2af711f57519e33739c5df23f https://git.kernel.org/stable/c/83114df32ae779df57e0af99a8ba6c3968b2ba3d •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48752 – powerpc/perf: Fix power_pmu_disable to call clear_pmi_irq_pending only if PMI is pending
https://notcve.org/view.php?id=CVE-2022-48752
In the Linux kernel, the following vulnerability has been resolved: powerpc/perf: Fix power_pmu_disable to call clear_pmi_irq_pending only if PMI is pending Running selftest with CONFIG_PPC_IRQ_SOFT_MASK_DEBUG enabled in kernel triggered below warning: [ 172.851380] ------------[ cut here ]------------ [ 172.851391] WARNING: CPU: 8 PID: 2901 at arch/powerpc/include/asm/hw_irq.h:246 power_pmu_disable+0x270/0x280 [ 172.851402] Modules linked in: dm_mod bonding nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables rfkill nfnetlink sunrpc xfs libcrc32c pseries_rng xts vmx_crypto uio_pdrv_genirq uio sch_fq_codel ip_tables ext4 mbcache jbd2 sd_mod t10_pi sg ibmvscsi ibmveth scsi_transport_srp fuse [ 172.851442] CPU: 8 PID: 2901 Comm: lost_exception_ Not tainted 5.16.0-rc5-03218-g798527287598 #2 [ 172.851451] NIP: c00000000013d600 LR: c00000000013d5a4 CTR: c00000000013b180 [ 172.851458] REGS: c000000017687860 TRAP: 0700 Not tainted (5.16.0-rc5-03218-g798527287598) [ 172.851465] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 48004884 XER: 20040000 [ 172.851482] CFAR: c00000000013d5b4 IRQMASK: 1 [ 172.851482] GPR00: c00000000013d5a4 c000000017687b00 c000000002a10600 0000000000000004 [ 172.851482] GPR04: 0000000082004000 c0000008ba08f0a8 0000000000000000 00000008b7ed0000 [ 172.851482] GPR08: 00000000446194f6 0000000000008000 c00000000013b118 c000000000d58e68 [ 172.851482] GPR12: c00000000013d390 c00000001ec54a80 0000000000000000 0000000000000000 [ 172.851482] GPR16: 0000000000000000 0000000000000000 c000000015d5c708 c0000000025396d0 [ 172.851482] GPR20: 0000000000000000 0000000000000000 c00000000a3bbf40 0000000000000003 [ 172.851482] GPR24: 0000000000000000 c0000008ba097400 c0000000161e0d00 c00000000a3bb600 [ 172.851482] GPR28: c000000015d5c700 0000000000000001 0000000082384090 c0000008ba0020d8 [ 172.851549] NIP [c00000000013d600] power_pmu_disable+0x270/0x280 [ 172.851557] LR [c00000000013d5a4] power_pmu_disable+0x214/0x280 [ 172.851565] Call Trace: [ 172.851568] [c000000017687b00] [c00000000013d5a4] power_pmu_disable+0x214/0x280 (unreliable) [ 172.851579] [c000000017687b40] [c0000000003403ac] perf_pmu_disable+0x4c/0x60 [ 172.851588] [c000000017687b60] [c0000000003445e4] __perf_event_task_sched_out+0x1d4/0x660 [ 172.851596] [c000000017687c50] [c000000000d1175c] __schedule+0xbcc/0x12a0 [ 172.851602] [c000000017687d60] [c000000000d11ea8] schedule+0x78/0x140 [ 172.851608] [c000000017687d90] [c0000000001a8080] sys_sched_yield+0x20/0x40 [ 172.851615] [c000000017687db0] [c0000000000334dc] system_call_exception+0x18c/0x380 [ 172.851622] [c000000017687e10] [c00000000000c74c] system_call_common+0xec/0x268 The warning indicates that MSR_EE being set(interrupt enabled) when there was an overflown PMC detected. This could happen in power_pmu_disable since it runs under interrupt soft disable condition ( local_irq_save ) and not with interrupts hard disabled. commit 2c9ac51b850d ("powerpc/perf: Fix PMU callbacks to clear pending PMI before resetting an overflown PMC") intended to clear PMI pending bit in Paca when disabling the PMU. It could happen that PMC gets overflown while code is in power_pmu_disable callback function. Hence add a check to see if PMI pending bit is set in Paca before clearing it via clear_pmi_pending. • https://git.kernel.org/stable/c/ef798cd035f316a537fee8ed170c127f12407085 https://git.kernel.org/stable/c/fadcafa3959281ce2d96feedece8c75c3f95f8a5 https://git.kernel.org/stable/c/215a90ce3754fe509efbce6b73a4bb643c7e7528 https://git.kernel.org/stable/c/55402a4618721f350a9ab660bb42717d8aa18e7c https://git.kernel.org/stable/c/28aaed966e76807a71de79dd40a8eee9042374dd https://git.kernel.org/stable/c/fa4ad064a6bd49208221df5e62adf27b426d1720 https://git.kernel.org/stable/c/fb6433b48a178d4672cb26632454ee0b21056eaa •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48751 – net/smc: Transitional solution for clcsock race issue
https://notcve.org/view.php?id=CVE-2022-48751
In the Linux kernel, the following vulnerability has been resolved: net/smc: Transitional solution for clcsock race issue We encountered a crash in smc_setsockopt() and it is caused by accessing smc->clcsock after clcsock was released. BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 50309 Comm: nginx Kdump: loaded Tainted: G E 5.16.0-rc4+ #53 RIP: 0010:smc_setsockopt+0x59/0x280 [smc] Call Trace: <TASK> __sys_setsockopt+0xfc/0x190 __x64_sys_setsockopt+0x20/0x30 do_syscall_64+0x34/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f16ba83918e </TASK> This patch tries to fix it by holding clcsock_release_lock and checking whether clcsock has already been released before access. In case that a crash of the same reason happens in smc_getsockopt() or smc_switch_to_fallback(), this patch also checkes smc->clcsock in them too. And the caller of smc_switch_to_fallback() will identify whether fallback succeeds according to the return value. • https://git.kernel.org/stable/c/fd57770dd198f5b2ddd5b9e6bf282cf98d63adb9 https://git.kernel.org/stable/c/d1d004585b40c212b338fc8a40cbaaf230ea4703 https://git.kernel.org/stable/c/38f0bdd548fd2ef5d481b88d8a2bfef968452e34 https://git.kernel.org/stable/c/4284225cd8001e134f5cf533a7cd244bbb654d0f https://git.kernel.org/stable/c/c0bf3d8a943b6f2e912b7c1de03e2ef28e76f760 •