Vulnerabilities

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> sctp: fix a potential overflow in sctp_ifwdtsn_skip<br /> <br /> Currently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only<br /> checks the pos against the end of the chunk. However, the data left for<br /> the last pos may be

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> crypto: seqiv - Handle EBUSY correctly<br /> <br /> As it is seqiv only handles the special return value of EINPROGERSS,<br /> which means that in all other cases it will free data related to the<br /> request.<br /> <br /> However, as the caller of seqiv may specify MAY_BACKLOG, we also need<br /> to expect EBUSY and treat it in the same way. Otherwise backlogged<br /> requests will trigger a use-after-free.

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mm/mempolicy: fix memory leak in set_mempolicy_home_node system call<br /> <br /> When encountering any vma in the range with policy other than MPOL_BIND or<br /> MPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on<br /> the policy just allocated with mpol_dup().<br /> <br /> This allows arbitrary users to leak kernel memory.

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ASoC: mediatek: mt8183: fix refcount leak in mt8183_mt6358_ts3a227_max98357_dev_probe()<br /> <br /> The node returned by of_parse_phandle() with refcount incremented,<br /> of_node_put() needs be called when finish using it. So add it in the<br /> error path in mt8183_mt6358_ts3a227_max98357_dev_probe().

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdgpu: SDMA update use unlocked iterator<br /> <br /> SDMA update page table may be called from unlocked context, this<br /> generate below warning. Use unlocked iterator to handle this case.<br /> <br /> WARNING: CPU: 0 PID: 1475 at<br /> drivers/dma-buf/dma-resv.c:483 dma_resv_iter_next<br /> Call Trace:<br /> dma_resv_iter_first+0x43/0xa0<br /> amdgpu_vm_sdma_update+0x69/0x2d0 [amdgpu]<br /> amdgpu_vm_ptes_update+0x29c/0x870 [amdgpu]<br /> amdgpu_vm_update_range+0x2f6/0x6c0 [amdgpu]<br /> svm_range_unmap_from_gpus+0x115/0x300 [amdgpu]<br /> svm_range_cpu_invalidate_pagetables+0x510/0x5e0 [amdgpu]<br /> __mmu_notifier_invalidate_range_start+0x1d3/0x230<br /> unmap_vmas+0x140/0x150<br /> unmap_region+0xa8/0x110

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> i2c: ismt: Fix an out-of-bounds bug in ismt_access()<br /> <br /> When the driver does not check the data from the user, the variable<br /> &amp;#39;data-&gt;block[0]&amp;#39; may be very large to cause an out-of-bounds bug.<br /> <br /> The following log can reveal it:<br /> <br /> [ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20<br /> [ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE<br /> [ 33.996475] ==================================================================<br /> [ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b<br /> [ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485<br /> [ 33.999450] Call Trace:<br /> [ 34.001849] memcpy+0x20/0x60<br /> [ 34.002077] ismt_access.cold+0x374/0x214b<br /> [ 34.003382] __i2c_smbus_xfer+0x44f/0xfb0<br /> [ 34.004007] i2c_smbus_xfer+0x10a/0x390<br /> [ 34.004291] i2cdev_ioctl_smbus+0x2c8/0x710<br /> [ 34.005196] i2cdev_ioctl+0x5ec/0x74c<br /> <br /> Fix this bug by checking the size of &amp;#39;data-&gt;block[0]&amp;#39; first.

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> integrity: Fix memory leakage in keyring allocation error path<br /> <br /> Key restriction is allocated in integrity_init_keyring(). However, if<br /> keyring allocation failed, it is not freed, causing memory leaks.

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: sched: fix memory leak in tcindex_set_parms<br /> <br /> Syzkaller reports a memory leak as follows:<br /> ====================================<br /> BUG: memory leak<br /> unreferenced object 0xffff88810c287f00 (size 256):<br /> comm "syz-executor105", pid 3600, jiffies 4294943292 (age 12.990s)<br /> hex dump (first 32 bytes):<br /> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................<br /> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................<br /> backtrace:<br /> [] kmalloc_trace+0x20/0x90 mm/slab_common.c:1046<br /> [] kmalloc include/linux/slab.h:576 [inline]<br /> [] kmalloc_array include/linux/slab.h:627 [inline]<br /> [] kcalloc include/linux/slab.h:659 [inline]<br /> [] tcf_exts_init include/net/pkt_cls.h:250 [inline]<br /> [] tcindex_set_parms+0xa7/0xbe0 net/sched/cls_tcindex.c:342<br /> [] tcindex_change+0xdf/0x120 net/sched/cls_tcindex.c:553<br /> [] tc_new_tfilter+0x4f2/0x1100 net/sched/cls_api.c:2147<br /> [] rtnetlink_rcv_msg+0x4dc/0x5d0 net/core/rtnetlink.c:6082<br /> [] netlink_rcv_skb+0x87/0x1d0 net/netlink/af_netlink.c:2540<br /> [] netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]<br /> [] netlink_unicast+0x397/0x4c0 net/netlink/af_netlink.c:1345<br /> [] netlink_sendmsg+0x396/0x710 net/netlink/af_netlink.c:1921<br /> [] sock_sendmsg_nosec net/socket.c:714 [inline]<br /> [] sock_sendmsg+0x56/0x80 net/socket.c:734<br /> [] ____sys_sendmsg+0x178/0x410 net/socket.c:2482<br /> [] ___sys_sendmsg+0xa8/0x110 net/socket.c:2536<br /> [] __sys_sendmmsg+0x105/0x330 net/socket.c:2622<br /> [] __do_sys_sendmmsg net/socket.c:2651 [inline]<br /> [] __se_sys_sendmmsg net/socket.c:2648 [inline]<br /> [] __x64_sys_sendmmsg+0x24/0x30 net/socket.c:2648<br /> [] do_syscall_x64 arch/x86/entry/common.c:50 [inline]<br /> [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80<br /> [] entry_SYSCALL_64_after_hwframe+0x63/0xcd<br /> ====================================<br /> <br /> Kernel uses tcindex_change() to change an existing<br /> filter properties.<br /> <br /> Yet the problem is that, during the process of changing,<br /> if `old_r` is retrieved from `p-&gt;perfect`, then<br /> kernel uses tcindex_alloc_perfect_hash() to newly<br /> allocate filter results, uses tcindex_filter_result_init()<br /> to clear the old filter result, without destroying<br /> its tcf_exts structure, which triggers the above memory leak.<br /> <br /> To be more specific, there are only two source for the `old_r`,<br /> according to the tcindex_lookup(). `old_r` is retrieved from<br /> `p-&gt;perfect`, or `old_r` is retrieved from `p-&gt;h`.<br /> <br /> * If `old_r` is retrieved from `p-&gt;perfect`, kernel uses<br /> tcindex_alloc_perfect_hash() to newly allocate the<br /> filter results. Then `r` is assigned with `cp-&gt;perfect + handle`,<br /> which is newly allocated. So condition `old_r &amp;&amp; old_r != r` is<br /> true in this situation, and kernel uses tcindex_filter_result_init()<br /> to clear the old filter result, without destroying<br /> its tcf_exts structure<br /> <br /> * If `old_r` is retrieved from `p-&gt;h`, then `p-&gt;perfect` is NULL<br /> according to the tcindex_lookup(). Considering that `cp-&gt;h`<br /> is directly copied from `p-&gt;h` and `p-&gt;perfect` is NULL,<br /> `r` is assigned with `tcindex_lookup(cp, handle)`, whose value<br /> should be the same as `old_r`, so condition `old_r &amp;&amp; old_r != r`<br /> is false in this situation, kernel ignores using<br /> tcindex_filter_result_init() to clear the old filter result.<br /> <br /> So only when `old_r` is retrieved from `p-&gt;perfect` does kernel use<br /> tcindex_filter_result_init() to clear the old filter result, which<br /> triggers the above memory leak.<br /> <br /> Considering that there already exists a tc_filter_wq workqueue<br /> to destroy the old tcindex_d<br /> ---truncated---

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> media: mediatek: vcodec: Can&amp;#39;t set dst buffer to done when lat decode error<br /> <br /> Core thread will call v4l2_m2m_buf_done to set dst buffer done for<br /> lat architecture. If lat call v4l2_m2m_buf_done_and_job_finish to<br /> free dst buffer when lat decode error, core thread will access kernel<br /> NULL pointer dereference, then crash.

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> staging: vme_user: Fix possible UAF in tsi148_dma_list_add<br /> <br /> Smatch report warning as follows:<br /> <br /> drivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn:<br /> &amp;#39;&amp;entry-&gt;list&amp;#39; not removed from list<br /> <br /> In tsi148_dma_list_add(), the error path "goto err_dma" will not<br /> remove entry-&gt;list from list-&gt;entries, but entry will be freed,<br /> then list traversal may cause UAF.<br /> <br /> Fix by removeing it from list-&gt;entries before free().

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> NFS: Fix an Oops in nfs_d_automount()<br /> <br /> When mounting from a NFSv4 referral, path-&gt;dentry can end up being a<br /> negative dentry, so derive the struct nfs_server from the dentry<br /> itself instead.