CVSS: 7.0EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48637 – bnxt: prevent skb UAF after handing over to PTP worker
https://notcve.org/view.php?id=CVE-2022-48637
In the Linux kernel, the following vulnerability has been resolved: bnxt: prevent skb UAF after handing over to PTP worker When reading the timestamp is required bnxt_tx_int() hands over the ownership of the completed skb to the PTP worker. The skb should not be used afterwards, as the worker may run before the rest of our code and free the skb, leading to a use-after-free. Since dev_kfree_skb_any() accepts NULL make the loss of ownership more obvious and set skb to NULL. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bnxt: impide que skb UAF se entregue al trabajador de PTP. Cuando se requiere leer la marca de tiempo, bnxt_tx_int() entrega la propiedad del skb completado al trabajador de PTP. El skb no debe usarse después, ya que el trabajador puede ejecutarse antes que el resto de nuestro código y liberar el skb, lo que lleva a un use-after-free. Dado que dev_kfree_skb_any() acepta NULL, la pérdida de propiedad es más obvia y establece skb en NULL. • https://git.kernel.org/stable/c/83bb623c968e7351aee5111547693f95f330dc5a https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6 https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338 https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65 https://access.redhat.com/security/cve/CVE-2022-48637 https://bugzilla.redhat.com/show_bug.cgi?id=2277831 • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48636 – s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
https://notcve.org/view.php?id=CVE-2022-48636
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup pointer being NULL. The pavgroup pointer is checked on the entrance of the function but without the lcu->lock being held. Therefore there is a race window between dasd_alias_get_start_dev() and _lcu_update() which sets pavgroup to NULL with the lcu->lock held. Fix by checking the pavgroup pointer with lcu->lock held. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: s390/dasd: corrige Ups en dasd_alias_get_start_dev debido a la falta de pavgroup. Corrige Ups en la función dasd_alias_get_start_dev() causada porque el puntero pavgroup es NULL. El puntero pavgroup se verifica en la entrada de la función pero sin que se mantenga presionado el bloqueo lcu->. • https://git.kernel.org/stable/c/8e09f21574ea3028d5629e5de759e0b196c690c5 https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70 https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4 https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1 https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1 https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6 https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a20 • CWE-476: NULL Pointer Dereference •
CVSS: 6.2EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48635 – fsdax: Fix infinite loop in dax_iomap_rw()
https://notcve.org/view.php?id=CVE-2022-48635
In the Linux kernel, the following vulnerability has been resolved: fsdax: Fix infinite loop in dax_iomap_rw() I got an infinite loop and a WARNING report when executing a tail command in virtiofs. WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0 Modules linked in: CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7 Call Trace: <TASK> dax_iomap_rw+0xea/0x620 ? __this_cpu_preempt_check+0x13/0x20 fuse_dax_read_iter+0x47/0x80 fuse_file_read_iter+0xae/0xd0 new_sync_read+0xfe/0x180 ? 0xffffffff81000000 vfs_read+0x14d/0x1a0 ksys_read+0x6d/0xf0 __x64_sys_read+0x1a/0x20 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The tail command will call read() with a count of 0. In this case, iomap_iter() will report this WARNING, and always return 1 which casuing the infinite loop in dax_iomap_rw(). Fixing by checking count whether is 0 in dax_iomap_rw(). En el kernel de Linux, se resolvió la siguiente vulnerabilidad: fsdax: Reparar bucle infinito en dax_iomap_rw() Obtuve un bucle infinito y un informe de ADVERTENCIA al ejecutar un comando tail en virtiofs. • https://git.kernel.org/stable/c/ca289e0b95afa973d204c77a4ad5c37e06145fbf https://git.kernel.org/stable/c/929ef155e1da41c06f4d8ca86ae12b851a83a744 https://git.kernel.org/stable/c/60644dffac87b1bb47bdb393aa29d5f2ffcf41a0 https://git.kernel.org/stable/c/17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 5.3EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48634 – drm/gma500: Fix BUG: sleeping function called from invalid context errors
https://notcve.org/view.php?id=CVE-2022-48634
In the Linux kernel, the following vulnerability has been resolved: drm/gma500: Fix BUG: sleeping function called from invalid context errors gma_crtc_page_flip() was holding the event_lock spinlock while calling crtc_funcs->mode_set_base() which takes ww_mutex. The only reason to hold event_lock is to clear gma_crtc->page_flip_event on mode_set_base() errors. Instead unlock it after setting gma_crtc->page_flip_event and on errors re-take the lock and clear gma_crtc->page_flip_event it it is still set. This fixes the following WARN/stacktrace: [ 512.122953] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:870 [ 512.123004] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1253, name: gnome-shell [ 512.123031] preempt_count: 1, expected: 0 [ 512.123048] RCU nest depth: 0, expected: 0 [ 512.123066] INFO: lockdep is turned off. [ 512.123080] irq event stamp: 0 [ 512.123094] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 512.123134] hardirqs last disabled at (0): [<ffffffff8d0ec28c>] copy_process+0x9fc/0x1de0 [ 512.123176] softirqs last enabled at (0): [<ffffffff8d0ec28c>] copy_process+0x9fc/0x1de0 [ 512.123207] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 512.123233] Preemption disabled at: [ 512.123241] [<0000000000000000>] 0x0 [ 512.123275] CPU: 3 PID: 1253 Comm: gnome-shell Tainted: G W 5.19.0+ #1 [ 512.123304] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013 [ 512.123323] Call Trace: [ 512.123346] <TASK> [ 512.123370] dump_stack_lvl+0x5b/0x77 [ 512.123412] __might_resched.cold+0xff/0x13a [ 512.123458] ww_mutex_lock+0x1e/0xa0 [ 512.123495] psb_gem_pin+0x2c/0x150 [gma500_gfx] [ 512.123601] gma_pipe_set_base+0x76/0x240 [gma500_gfx] [ 512.123708] gma_crtc_page_flip+0x95/0x130 [gma500_gfx] [ 512.123808] drm_mode_page_flip_ioctl+0x57d/0x5d0 [ 512.123897] ? drm_mode_cursor2_ioctl+0x10/0x10 [ 512.123936] drm_ioctl_kernel+0xa1/0x150 [ 512.123984] drm_ioctl+0x21f/0x420 [ 512.124025] ? drm_mode_cursor2_ioctl+0x10/0x10 [ 512.124070] ? rcu_read_lock_bh_held+0xb/0x60 [ 512.124104] ? lock_release+0x1ef/0x2d0 [ 512.124161] __x64_sys_ioctl+0x8d/0xd0 [ 512.124203] do_syscall_64+0x58/0x80 [ 512.124239] ? • https://git.kernel.org/stable/c/c5812807e416618477d1bb0049727ce8bb8292fd https://git.kernel.org/stable/c/e5ae504c8623476e13032670f1a6d6344d53ec9b https://git.kernel.org/stable/c/a6ed7624bf4d0a32f2631e74828bca7b7bf15afd https://git.kernel.org/stable/c/63e37a79f7bd939314997e29c2f5a9f0ef184281 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2022-48633 – drm/gma500: Fix WARN_ON(lock->magic != lock) error
https://notcve.org/view.php?id=CVE-2022-48633
In the Linux kernel, the following vulnerability has been resolved: drm/gma500: Fix WARN_ON(lock->magic != lock) error psb_gem_unpin() calls dma_resv_lock() but the underlying ww_mutex gets destroyed by drm_gem_object_release() move the drm_gem_object_release() call in psb_gem_free_object() to after the unpin to fix the below warning: [ 79.693962] ------------[ cut here ]------------ [ 79.693992] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 79.694015] WARNING: CPU: 0 PID: 240 at kernel/locking/mutex.c:582 __ww_mutex_lock.constprop.0+0x569/0xfb0 [ 79.694052] Modules linked in: rfcomm snd_seq_dummy snd_hrtimer qrtr bnep ath9k ath9k_common ath9k_hw snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel ath3k snd_intel_dspcfg mac80211 snd_intel_sdw_acpi btusb snd_hda_codec btrtl btbcm btintel btmtk bluetooth at24 snd_hda_core snd_hwdep uvcvideo snd_seq libarc4 videobuf2_vmalloc ath videobuf2_memops videobuf2_v4l2 videobuf2_common snd_seq_device videodev acer_wmi intel_powerclamp coretemp mc snd_pcm joydev sparse_keymap ecdh_generic pcspkr wmi_bmof cfg80211 i2c_i801 i2c_smbus snd_timer snd r8169 rfkill lpc_ich soundcore acpi_cpufreq zram rtsx_pci_sdmmc mmc_core serio_raw rtsx_pci gma500_gfx(E) video wmi ip6_tables ip_tables i2c_dev fuse [ 79.694436] CPU: 0 PID: 240 Comm: plymouthd Tainted: G W E 6.0.0-rc3+ #490 [ 79.694457] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013 [ 79.694469] RIP: 0010:__ww_mutex_lock.constprop.0+0x569/0xfb0 [ 79.694496] Code: ff 85 c0 0f 84 15 fb ff ff 8b 05 ca 3c 11 01 85 c0 0f 85 07 fb ff ff 48 c7 c6 30 cb 84 aa 48 c7 c7 a3 e1 82 aa e8 ac 29 f8 ff <0f> 0b e9 ed fa ff ff e8 5b 83 8a ff 85 c0 74 10 44 8b 0d 98 3c 11 [ 79.694513] RSP: 0018:ffffad1dc048bbe0 EFLAGS: 00010282 [ 79.694623] RAX: 0000000000000028 RBX: 0000000000000000 RCX: 0000000000000000 [ 79.694636] RDX: 0000000000000001 RSI: ffffffffaa8b0ffc RDI: 00000000ffffffff [ 79.694650] RBP: ffffad1dc048bc80 R08: 0000000000000000 R09: ffffad1dc048ba90 [ 79.694662] R10: 0000000000000003 R11: ffffffffaad62fe8 R12: ffff9ff302103138 [ 79.694675] R13: ffff9ff306ec8000 R14: ffff9ff307779078 R15: ffff9ff3014c0270 [ 79.694690] FS: 00007ff1cccf1740(0000) GS:ffff9ff3bc200000(0000) knlGS:0000000000000000 [ 79.694705] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.694719] CR2: 0000559ecbcb4420 CR3: 0000000013210000 CR4: 00000000000006f0 [ 79.694734] Call Trace: [ 79.694749] <TASK> [ 79.694761] ? __schedule+0x47f/0x1670 [ 79.694796] ? psb_gem_unpin+0x27/0x1a0 [gma500_gfx] [ 79.694830] ? • https://git.kernel.org/stable/c/55c077d97fa67e9f19952bb24122a8316b089474 https://git.kernel.org/stable/c/b6f25c3b94f2aadbf5cbef954db4073614943d74 •